Ammo Direct's reloads are truly dirt cheap. After about 1,250 rounds, I had 6 jams, 1 dud, and 1 round that wouldn't feed AT ALL (the bullet wasn't seated properly). The jams were usually due to a protruding primer.
This is in my H&K 9mm. I've never had a problem with any other ammunition.
Carroll Ammunition had decent prices, and the 250 rounds they sent me were flawless, although they felt a little weaker than usual. I just ordered 500rds of Sellier and Beliot from AmmoMan. I'll see how it goes.