I'm about to plump for a kit based round one or other of the above. The Hassy kit is a little cheaper and will let me later purchase that amazing tilt shift adaptor, the P45+ is philosophically more appealing as a result of the open system approach.
I'll assume for the moment that IQ is almost identical. I'll also assume that the small huffiness I feel about Hassy doing lens correction in software rather than in lens is misplaced: I use an M8 and that is also doing lens correction in software and that really doesn't bother me.
As far as I can see it comes down to a few questions:
1) The p45+ Phamiya solution has a sort of live view though I hear it's cruddy. Does that Hassy have it at all?
2) The P45+ has long exposures, which I might well use.
3) I never use a studio and almost never use flash so he hassy leaf shutter advantage is lost on me in comparison to the loss of high shutter speeds. I'm a landscape man at heart so will need deep DOF but I would also like sometimes to use extreme narrow DOF and in daylight with 1/800th max shutter that would mean carrying ND filters, which is dull.
4) It is abysmally unclear from the manufacturers' websites what is included in the kits. That might be a relevant factor. Does anyone know?
So far my heart says Hassy but my checklist says Phase, just. My wallet merely screams!
I'll be selling one M8 and a 1DSIII+ glass and an MP and a Wista field Cam.
Any thoughts? (BTW have now counted out Leaf/Sinar and MF film for various reasons and am unlikely to change my mind!)