I've tried two ROMs - the one posted by ghettofreeryder above, and this one:
http://forum.ppcgeeks.com/showthread.php?t=29103&page=5.
Ghettofreeryder's has an issue whereby if the GPS is engaged, calls go directly to voicemail. So while it's a near match for the Telus stock look & feel, it falls short there. I tested it big-time to prove that out after reverting back to my first choice, the RLMCS ROM. Some of the Vista-esque enhancements are ugly in my opinion, but from a stability perspective I have to say it's 100%. Seriously...no more SD corruption, no more lockups in sleep mode, the GPS can be active and incoming calls still come through. Of course, if I'm streaming video or something then it goes to voicemail often...but that's just a limitation of simultaneous voice and data.