I kinda like the ultra 15. I grabbed one a few weeks ago.Just a quick update, turns out i don't like the ultra, the anti vibe is awful next to a hickory handle. Also, just weighed the two..... Cali framer is marketed at 23oz and ultra marketed at 15oz. However, total weight puts the two hammers only 3oz apart in weight difference. Ill stick with my Cali framer. Cheers estwing for nought lol.