Here's DonTrumpet's list of weapons that he hasn't used but will tell his opinions on them anyway
With the exception of the infilshitter, all of the default weapons for the non-max classes are pretty good. It just takes getting used to the ROF and the slightly higher than average horizontal recoil.
TAR - Fantastic weapon with ALS. Hipfire galore and not too shabby ADS.
SABR or T1B? - SABR is more geared towards longer range and the ultimate git gud weapon, while the T1B is a more accurate cycler without full auto. The T1B is more forgivable outside of its comfort zone than the SABR, but it does less damage per bullet which is the whole point of using a long range weapon anyway.
Do not get the TRV or the torq-9, they're generally shit. The NS-11A is alright for what its worth.
Jaguar - King of hipfire, shit ADS. Pop an ALS and watch as your crosshair is the size of a planetman's head at 50 meters.
Trac-5 Burst - A recent favorite of mine. It can shit on almost anything at range and can compete in CQC. Headshots all day every day.
I would not recommend the AMC, Lynx, or the cougar. While the AMC is a slightly better NS-11C, the .5 movement for ADS just makes it shit compared to it. The Lynx is a weird beast, hipfiring is what it looks like its good for, but its actually a better ADS weapon than anything. The cougar is just a weak NC equivalent, nothing special.
MSW-R for a carv that can actually do something other than just hose down shit, T32 Bull is a superior Rhino with less ammo, and the T9 Carv-S for maximum suppression with 200 rounds per clipazine. The TMG-50 is both fantastic and frustrating to use. Its more useful at medium to long range than any of the other LMG options.
For bolt action, TSAR-42 for the shorter ranges, RAMS .50M for longer ranges. The inbetweens are shit compared to either.
For Scout/Battle rifles just message Casstap :^)
even though I hate using PS2 shotguns, The FA1 is fine, the uppercut is the pump action one to get. Ignore the others.
Armistice is the only one to go for. BRRRRRT your way to victory and many salt tells.
The NS-7, combined with soft point ammo, gives you 20 meters of max damage though the dps output is kind of medicore to begin with, it gives it an edge over a lot of other weapons.
The Repeater is actually a great sidearm if you don't have a commissioner. If you have 1000 certs to burn, get the commissioner.
Get either the ASP-30 for lockon anti-air, Striker for general purpose/ spam with your friends at airchavs, or the NSX Masamune for maximum burst damage. You don't really need a lock-on for ground, unless you want an annihilator for lock-on against both air and ground though it can't dumbfire.
Mutilator is a good choice since its cheap and can get a shit ton of ammo per mag. Its an upgraded Cycler. Mercy is good if you can get constant headshots, and it has no damage drop-off. Pounders rek shitters all day every day. Git gud at headshots against infantry/maxes and watch all the niggas drop. The Gorgons are alright, but its nothing special.
The archer is alright to harass vehicles, a fantastic anti-max weapon, and generally makes the engineer a certified shit slapper. Expensive at 1000 certs for something thats rather niche.
The Minigun is very niche for what it does. Just don't get it less you have nothing else to do as a heavy.