I went with the Canon HV30 High Definition model. It uses tapes not hard drive. Hard drive models are finicky and the resolution and editing capabilities not as good as tape. It all depends what you are looking for. Either way, Canon's are very compatible with Macs.
I own 3 Macs(MacBook Pro, MacBook and 24" iMac) and have no issues.
Let me know if you have any other questions. I'm pretty familiar with Mac's and Apple software editing suites.