I made the"switch" to Hasselblad. While I still use my pentax gear and carry it everywhere in the car (as a kind of beater camera), the H5D-60 is my go to rig.
Hasselblad service has been incredible. As you would expect. And if I want to try a new lens or other piece of gear I just contact my rep and it shows up a couple of days later for me to evaluate.
Build quality is ridiculous. Image quality is untouchable. Lens clarity is so far beyond tac sharp I can not even begin to describe it. (and I am comparing this to a lot of my FA* and limited lenses)
There is only really one issue. Its heavy, bulky and hard to pack. That being said most of my photography is being done on long hikes so if you are not in shape and prepared to lug 35+ pounds of gear around you may want to look at something other than medium format. If most of your work is in the studio I would say go for it - you WILL NOT regret it.
Just get used to adding another 0 to the price of everything