James,
If you will be doing any special effects (freeze-frames, chromakey compositing) I think the Sony V1U is the way to go. It has TRUE progressive scan, along with HDMI out, which can be connected to a Blackmagic Intensity card in your computer to record uncompressed video (and I think take advantage of the 4:2:2 color encoding the V1U uses internally). Of course, I'm talking about recording directly to computer (as opposed to recording to miniDV, then transferring to computer).
On the other hand, if you're not planning any special effects, save a little money and get the Canon XH-A1 (which I suspect has sightly higher resolution).
Just my 3 cents worth, :)
Ken Hull