Hey Tim, been enjoying your Hasselblad purchase thread. I am also a Nikon D3s shooter and looking to add MF. I have been evaluating Phase One P30+ and P40+, along with the Hasselblad H4D-30 and H4D-40.
I just LOVE Capture One Pro as a Raw converter for my Nikon files (which makes me like P1 a lot), but to be fair Phocus is obviously a great application too. I think True Focus is winning me over though, this sounds really appealing.
I looked long and hard at the Pentax 645D but have ruled it out (won't have tether option until mid-year, no pro-software, slow flash sync, slow writing files. Otherwise promising spec).
The H4D-31 is winning on my budget argument, but I intend to ask the dealer here in Australia about demo's on the 40 range as you are - a good idea
Again, thanks for asking all those questions - really helpful to me too!
Jay.