I have a Kimber Eclipse Ultra II that wasn't reliable in the beginning (purchased in 2005). I had to sand and polish the feed ramp to make reliable (FTRB). It is my EDC now. Took about 800 rounds to make it reliable. The rest of my Ultras: SIS Ultra, Sapphire Ultra II, Crimson Carry Ultra II, and a couple of others that I'm not remembering now, have been reliable from the get go.