Been on 351 for a couple days now. Pretty stable, no big issues that the previous or stock releases didn't have. It does not fix the SMS contact name issue. Seems a bit more stable, I was having the occasional random reboot which seems to have gone away.
Personal: T-Mobile USA Bold 9700 | 220.127.116.113
Work: ATT Wireless Bold 9000 | 18.104.22.1684
Past: 8900, 8830, 8700c, 7100t, 7520, 7230, 7750, 6750