Just curious who uses which legendary on what class character and why? Here's my $0.02

Guttersnipe - no characters, I think others are better for all classes
Nova Blaster - Use on Commando and Engineer, good damage, a slightly higher delay, nice dodge and crit! Mana and Health bonus good.
Electrorazr - Use on Op, highest crit bonus, and a hit bonus, lower damage then Nova, but lower delay also, so higher DPS.

What's your take?