Dry Creek bullets are very good, excellent source for real Keith bullets, especially heavier ones.
Leadhead's are also very good, they don't have as many Keiths but they turn out a quality product.
I've heard good things about Beartooth, but haven't gotten the bullets I ordered 2+ months ago yet so I can't comment on them personally. They do state they have a 6 month backlog though so the delay wasn't unexpected.
I can second what HSMITH says about Meister bullets, the couple different ones I've used (230gr LRN in 45 ACP and 300 gr LTC in 44 Mag) have been solid performers. Nothing special or unique about them, they turn out the same bullets it seems every other large commercial caster does - bevel base SWC, LRN etc, but they work well.
I think the best 45 Colt self defense load comes from Corbon though in the form of their 200 gr JHP @ 1,100 fps and not a hard cast bullet. If they would load their 165 gr JHP @ 1,250 fps in the 45 Colt and not just 45 Auto I think it might make a better one, especially in compact 45 Colts like the Taurus Tracker.