It is a tough call, both systems have advantages and disadvantages.
Flexcolor must be used to import the images but you can then export them to DNG and use any downstream software that can read the H2 DNGs, it adds an extra step to the workflow. I assume this will still work with the H3, there will be lawsuits if this is not the case.
Flexcolor is ok, not great, but getting better. There is a new release coming that is rumored to fix many of the issues, do not know when, Hasselblad are scarce on information. One gripe, of many, I have is zooming into an image to check focus, hot pixels or dust. This must be done in Flexcolor with the Detail window which for me is clunky, you cannot just zoom into the image - this may be fixed in the next release. Capture One is more mature and offfers many more features and is much faster to use.
My workflow lately has been Flexcolor to DNG and DNG to Adobe Lightroom and Photoshop as needed. LightZone also handles the H2 DNG's. Apple's Aperture does not. I have not tried the path from Flexcolor to DNG to Capture One but I am going to try that later today. I just returned from a workshop and I had forgot how great Capture One is.
The H3 will support the new prisim finder and the new HCD lenses, such as the upcoming HCD 28mm wide angle. There will most likely be more HCD lenses to come. Clearly most of the new accessories are being designed to lock out H2 and H1 users, although the waist level finder will work on the H2.
What I find annoying is that Hasselblad has embarked on a long slow process to lock customers in, which goes against their initial claims of creating an open system and a modular system. First DNG was produced directly by the backs, then DNG was dropped in favor of 3FR. Then the H2 open architecture was closed with the H3 announcement and new accessories are only usable on the new H3 leaving the H2 and H1 behind. There is an upgrade path for existing users but the details and timing have not been announced. Hasselblad does upgrades after new customer shipments which is the opposite of other digital back makers. Digital APO correction was announced for the H2 and now the literature states it is only avialable on the H3.
The Phase One warranty is much better, 3 years versus Hasselblad 1 year. Hasselblad is $2,000 to extend the warranty an extra year and it is not clear if you can extend beyond that. Customers were led to believe that the warranty was 3 years by both dealers and Hasselblad staff so this is very questionable business practice.
In my experience the Phase One support is better than the Hasselblad-Imacon support for software and the digital backs. Hasselblad is always quick to deny any problems which i find irratating. The whole "worlds first full frame 48mm DSLR" ads are silly not to mention odd, what about the H2D? Same sensor size. When companies resort to this kind of marketing BS it causes a confidence issue, so what else is going to go wrong or what other BS might we be getting? They have a great product so no need to BS and make silly claims, I'd fire the ad agency.
One advantage is that with the H3 and CFH39 combo you have a very nice integrated system with one control and battery system. Hopefully the system will become more stable to fully realize the integration benefit that should be there.
All users of the H2 and CFH39 that i have tallked to and worked with, including myself, still experience lock ups that can only be cured by removing the battery. Long exposure performance is lousy, lots of hot pixels, noise in the shadows and the OLED display gets an orange glow that makes it useless for review unless you scroll to another image and then back. In the studio this should not be a concern since you will have plenty of light.
The new Hasselblad company is not the old Hasselblad company when it comes to customer care, information, road maps and rapid support. The other side of the coin is the H-series bodies are wonderful to use, the controls are well laid out, the viewfinder is awesome and the Fuji lenses are first rate. The CFH39 back produces great detailed images. My only ergonomic complaint is that when the camera is high on a tripod it is impossible to use the grip display which faces up, it would sure be nice to see the entire camera user interface displayed on the back OLED display as well, or have a viable remote control with display.
A Phase One and Hasselblad merger would have been a lot more exciting ;-)
I will most likely upgrade to the H3 - CFH39 when details and timing are released. The lock in worked, depreciation schedules are long enough that the system still has too much value on the books ;-) If Hasselblad locks in H3 or H4 customers to Flexcolor then i think we will see a revolt, lots of lawsuits and a crash in the value of H-Series gear, let's hope the new management has enough brains to not go this path.
Hope this was helpful,