I see, I guess that's understandable. If they suit your play style and you're willing to go to the trouble to level them up, then it makes sense that you would prefer to use the Snake or Machine gun.
In the other hand though... I have seen that having at least one weapon that won't drop to lvl1 after entering certain areas, I think it would be better to have Spur. I am not sure yet.
Before I'll start completing "truly" your mod, I am aiming to do either ending 2 or 3. Why? Well... I'll have then at my disposal that wonderful and lovely Blade and that would make things a little bit easier. It will be at lvl1 when I enter the hell, but it would do so much damage.
I decided to take a look a little around and hear other peoples opinions about Snake, Machine Gun and Spur. I saw following:
Snake: Although its great because it can shoot through walls and its deadly against Monster X and has still great uses, it may give hard time to win Ballos, unless you are fast keyboard button presser (like me) by that: I mean pressing some keyboard with a great/good speed to spam more and more ammo's rapidly. Its like "spamming" the same keyboard button. The weapons that also benefits for quick keyboard button pressing is Polar Star, Fireball Gun and partially Rocket Launcher (especially if they hit to their targets.) Also: Snake takes the Fireball Gun away so changing weapons will be faster. That is why Snake could suit my style. In the other hand though: I start Hell with ALL weapons on lvl1 once I enter the Hell, which can make things difficult.
Machine Gun according to many opinions: Is the 2nd best choice and makes the game easier on first half but the other half will be harder. Unless I can make it lvl3 on Hell, it will be difficult to do much with it. But once it is at lvl3, it will be useful against Ballos and could give you extra maneuverability. However: Just like Snake, I must begin Machine Gun from lvl1, which can make things harder.
Spur is the (as far as I can tell) the best choice because of its immunity for lvl1 drops and unlimited ammunition. It will make first half of the game harder but the other half easier especially against bosses. As you described to me: Shooting Ballos with charged beams can make a quick work of him and actually of any bosses. However: It will require multi-concentration because while you must keep other button pressed down and time your beams well, you must also concentrate controlling your Booster which is exactly one of my biggest weakness: I have hard time to concentrate two things at the same time (oh don't make me start to talk about 3 and 4 things...) which is why I see Spur bad choice to me... Even though I can still use the spamming technique with Spur, it will be much less efficient than Snake for example.
I am still uncertain which weapon to take before entering hell, but odds are on Spur's and Snake's favor. Maybe I'll find a way when I'll first try to complete the game with King and Toroko dead. (I'm sorry ;c) partly because I am still beginner at Cave Story. Its the first time I actually play the game.
Then the weapons I really don't bother to try collecting (it makes quick-switching weapons harder.) Bubble gun because its simply too weak even at level 3. Nemesis is a powerful weapon, but I wouldn't change it to Blade because Nemesis becomes weaker on every level and avoiding to level up Nemesis is very hard (to me at least) which is why I'd stick with the Blade. Plus: Blade does intense damage. Although: Especially against Monster X: Snake is also very great choice.
PS: I am sure anyone can be able to spam the same keyboard button but be warned that your hand/finger MAY feel some pain afterwards
Also I am curious: How come that All-Cure works if you give it to Professor Booster when you are on your way to ending 4 but not when going to ending 3? Is it so Professor Booster could survive so you could prevent the Boulder Chamber event and possibly to make the game different from that part forward?
Nonetheless: I like the idea of it. But thinking "logical way:" Could it be that in 4th Ending event: Professor Booster has much more lenient wounds than in 3rd Ending path? That's at least the most logical reason I can come up with xD oh and about All-Cure pill: I saw that normally in Ending 3 path, you should give the pill to the Physician and/or nurse, but in your mod, that apparently isn't necessary because when you get All-Cure pill, Curly is already away. Does this mean I can basically keep All-Cure pill for the rest of the game or will I not get to the "hell" unless I give the All-Cure pill to Physician?
Oh and one more thing: When I throw Blade at level 3, do you think the spirit that appears is Arthur's Spirit? Because instead of purple overcoat, it is blue. Or then its combination of both: King in blue overcoat
I saw that Blade was deadly effective against the Ironhead boss.
Update: OMG YES I DID IT! I defeated Hell and Ballos at last with the help of Snake, Blade and Super Rocket Launcher. I admit I was wrong: Nemesis would have been more effective in Hell but... I just couldn't anyways make myself giving up Blade because I own revenge that I promised King. I also wanted to avenge for other dead friends... Such as Toroko. I finally gained the 3rd ending. Now that it is done, I shall finish the 4th ending.
btw during the 3rd ending: Misery reveals to Quote and Curly that Misery was the one who originally is at fault that Demon Crown was made... Does he say the same in 4th ending?
Also: I have now 2 more favorite songs as well: Running Through Hell and Moonsong. <3
My feelings after I defeated Hell and Ballos? 100% combination of exhaustion, pride and enjoyment.