I would go for the Canon HV 20 or the new model HV30 (same picture just the color changed).
It is not a AVCHD but HDV, brilliant picture quality and you have still a lot of manual control that not every camera in this price class has (still cheaper than the new AVCH in the market).
And the tapes could be archived easily and working with transferred material will be less CPU intensive like working with AVCHD.
Negative Point:
Takes time to log everything onto your HD but I suppose if you do it really seriously, this is the least time...