I have 2 Hasselblads and I love them.
My first, a 500CM, I got years ago. I bought it (new) back when Hasselblad used to have great rebate specials. So I go an extra back for free. A couple of years later I bought a macro lens (also when they were having a rebate special, and got another back free.) You used to be able to wait for those annual rebate deals and build a system at a deep discount.
A couple of years ago I added a 503CW (a GREAT deal on a demo I couldn't resist), and that has changed my life because of the winder. With the winder, you can hand hold it just like you hand hold a 35, so you don't have to be on a tripod. It's great having the option of being more mobile.
The 500CM, as much as I love it, I've never been able to hand hold because of the awkwardness of the way you have to do it. I can only use it on a tripod.
I'd also love to have a Mamiya 6, but cannot afford one. It's a someday thing. And I've also heard the same thing about the lenses. But I also know someone who has one & he loves it. He can just carry it around in his jacket pocket, so can always have it with him. That is the reason I'd love to have one. I'd love something light enough to always carry.
So many people are getting rid of their film cameras that you can get great deals on used cameras, but you do have to be careful. From my experience, there are many shops where the condition is not as advertised for used equipment. One place that has a great reputation is KEH (
www.keh.com). I haven't used them, but I've heard only good things about them.