Good code weapons

[Haste]

Err.. No. The higher the refire rate, the more often the weapon fires. In general, damage output isn't very different. Very low refire weapons offer a substantial punch, usually twice per second, whereas high refire guns spread damage over more projectiles (thus making it more likely that you hit at all).

Lower refire leaves you more time to maneuver, as you can fire once, dodge like crazy, early turn, etcetera. It's not very convenient when chasing, however, as it can be hard to hit at all if someone is running and dodging.