I tried imagining Nexuiz without one of the weapons and i just can't!
Laser
Epic fights on Evilspace, and it's the Nexuiz equivalent to a car in RealLife.
Shotgun
oh.... okay, wait. I forgot it. Yes, i forgot the Shotgun. I tend to do that alot. I can imagine Nexuiz without it.
Uzi/Machine Gun
A proper FPS needs some sort of Rapid Fire Weapon. But our Uzi fails miserably. I mean, you can't be serious! Let's see.... we have the Nex, Electro, Rocket launcher.... Uzi. Even the Laser is more powerful!
Mortar
i just love the clicker-clackering sound of grenade spamming
Electro
Epic plasma goodness
Crylink
One of my favorite weapons, before they started tweaking it. I think it's the most-controversial weapon in Nexuiz and that's what gives this gun its character. If weapons had a gender, then this one would be a transvestite.
Nex
Hard-lined and straight-forward. A strong contrast to the other weapons.
Hagar
I think this one has benefitted the most from version changes. It didn't really change much, it just matured and developed a distinctive character.
Rocket Launcher
It's like a big fluffy teddybear, whose farts are deadly. Gotta love it.
I voted Electro, because it has one of the strongest characters along with the RL, but you see rockets all the time in movies and games, so the Electro has a more unique feeling to it. Talking about unique, Crylink would be my second choice.