best id for shot's?

[K_I_R_E_E_K]

A little off the topic but... I have a Greenill FOmar that seems to do well for tech disks and rods. I've also gotten a decent amount of mind material. Are there really any IDs that are bad for certain classes?

Well yes, if you consider the basic weapons (not the special/rare ones) you can see on the chart that some id's may find easily some weapons but others may apear very rarely.
Take skyly for example, it may not be the best oprion for a ranger since mechguns will hardly apear.
As for rare weapons, each id is different, but even on a bad i you may find really great stuff for your char(s).