Well pay opportunities are pretty much equal in every faction, as they all claim to be paying better than others.
And I cannot speak for other factions, but
Omegas are for more good and neutral natured Mercs, we offer plenty of opportunities, high-quality gear, spots in hunting, mercenary, or professional army division. You could quit at any time, of course, as long as you don't run off with too much of our equipment
Bounty Hunters' Guild is a minor faction with offices in most of the shadow spaceports located throughout Galaxy, organization dedicated to supporting, employing, and training bounty hunters, they don't have alignment restrictions so you can be with any other faction and still keep membership in the Guild