Holy grail from 2 is really good, but I like the rocket launcher more because it's got more ammo. I also really like the shredder from 2, it's fun to randomly shoot from the top of the stage and get surprise headshots on people.
I love the sniper. (right now the regular is my favorate.I havent tryed any of the other types of snipers,except the rail gun wich stinks. Iv been spending credits on the abilities.
Raze: Assault Rifle; I just love any Automatic weapon.
Raze2: Either Precision Laser (PL) or Holy Grail (HG). PL just looks real cool and is good for when you're reloading your Long Range or Explosive, and very accurate for an automatic. Has a cheap price, as well. HG makes me feel like a total bada**. With double-damage, that sucker is a one-hit-kill, shields or no shields. Sure it has a terrible reload time, but makes up for that with power and the fire (which still makes for a one-hit-kill even if the enemy is using adrenaline boost because then the're on fire.)
Holy Grail is the best there is if you can find a nice sniping spot and be loaded up on ammo with a nice backup like the assault rifle for going scouting for more ammo
Raze: Rocket launcher. Really, it's that simple 1 hit KO. Easy just like that. Nothing special. A good ol' plain 1 hit KO dude that is literally explosive.
Raze 2: Holy Grail. Meh yeah you have to reload after every shot but if they eliminated the reload with every shot, it would be insanely overpowered. It's very good, a little extra burn after every shot. Overall, a great weapon to use.