Might be cheaper to buy and resell if you don't like rather than rent. But I don't think you will part with a Hasselblad once you shoot with it! I bought a 503CW, 80mm, 150mm and winder... Got a good deal and it's a keeper. My thoughts:
1. Shutter is a lot louder than I was used to but doesn't bother me.
2. Lots lighter and more compact than a mamiya rb/rz. Can handhold easily.
3. Square format is pleasing.
4. Just a fantastic camera system and a pleasure to use - has some quirks and peculiarities but once learned, easy.