Definitely the Miniturret Glove. It was such in good use in Going Commando. Drone Devices were also helpful too, but I think it did not carry too much ammo unlike the Miniturret Glove.
Predator Launcher v.s. Spitting Hydra
Hmm… Spitting Hydra saved me from those Big 4 eyed Thyrranoids in holostar-studios (i did not own Anihilator ) but i stil like Predator Launcher more .
Pyrocitor vs. Pyro-blaster
pyro balster cause i didnt like the pyrocitor a whole lot
cufflink bomb or nitro launcher
The Nitro Launcher because it was such a useful weapon in Up your Arsenal.
Tankbot Glove vs. Agents of Dread
Tankbot Glove is so hard to upgrade and its so useless , Agents of Dread is funny to use and will even kill enemies quite quickly if you compare it to Tankbot .
Tesla Claw vs. Spitting Hydra
Spitting hydra cause that weapon was awesome on uya
the chopper or the disc blade gun
The Disc Blade Gun all the way. Using this weapon felt flexible and fun compared to the Chopper.
the Devastator v.s. the Negotiator
im going to have to say the devastator cause that weapon kicks butt
blaster or the scorcher
The Blaster because it was a medium-range weapon unlike the Scorcher,which is a short-range weapon.
Magma Combuster vs. Heavy Lancer
Heavy lanser cause it shoots fast
visbomb or the devastator
The visibomb because you can be more accurate (sort of)
Cryomine or the liquid nitrogen gun?
liquid nitrogen gun
tesla spikes or tesla claw
Definitely the Tesla Claw. Tesla Spikes are useful, but they're not as amazing as… THE TESLA CLAW! 
Miniturret Launcher (Deadlocked) v.s. Miniturret Glove (Going Commando)
Mini turret glove for sure! When fully upgraded it packs a wallop!
Meteor gun (commando) Or liquid nitrogen gun (uya)?
The one form UYA, cause it keeps the laza- like trail in it!
Zurkon the Destroyer (V5 Mr. Zurkon) vs Agents of Dread (UYA)