TL;DR: If you’re too dumb too read the whole thing, keep scrolling.
Well, your lack of genre hurts my specifics somewhat, so I’m gonna ramble. Strap in, y’all.
For shotgun, it’d have to be the Hollunds. I’ve never played the Ahnuld, since I have a blish cobalt for Fletcher, and I despise Rhino. The extra shots just throws the Hollunds ahead of the Remburg IMO.
For AR, the M4. I love the Dreiss, but I’ve only played it with Arty’s default card. (Can’t seem to get an Arty card with the Dreiss, and I don’t even own Kira.) I’ve spent more time with the M4 than any other Assault Rifle, due to the fact that I’ve hardly played the Timik or the Stark at all, and haven’t played the BR-16 enough to catch up with my time on Skyhammer w/ my wonderful silver M51.
Sniper rifle, Grandeur all the way. I can’t hit squat with the Felix or the MOA, and haven’t played much with the PDP.
SMG, either the Hochfir or the SMG-9. I haven’t played the KEK for enough time to form an opinion, so don’t hate on me for not singing its praises. Same with the Crotzni. I love the Blish, but I don’t play Fletcher much, as I don’t even own him yet, and I’ve ditched Aura in favor of Sawbonez. (I run SMG-9 on Bonez)
Pistol, (Lol, here comes the hate) I prefer the Caulden. The higher mag cap may be great for you pros that land every shot you fire, but for lower levels like me, the higher damage per shot is better.
Magnum, the DE. Higher fire rate. higher mag cap. Nuff said.
Machine Pistol, Empire-9, for obvious reasons. MP400 is a close second.
MG, K-121. Haven’t played Thunder except for a minute or two when he was on rotation.
Melee: Gonna be the Stiletto. Fast movement, fast light strike, devastating power strike. I can oneshot Aura and Sparks, and mess up anybody else.