Analog film photography and cameras

I'm not sure of your definition of usable but Portra 400 always looks very sharp and smooth IMO. Best 400 I have seen.

Yea, "usable" is a rather loose definition.
Picked up a roll of Portra 800 today and will find out.

I'm thinking about giving medium format a try and was wondering if anyone knows a good way to start.

I was thinking about getting myself a mamiya or something similar like a pentax 645 but was wondering if it was worth saving up a bit longer and going for a hasselblad

Well, depends on what sort of quality you're after / how much money you're going to spend,
and if you want squares like hasselblad, rolleiflex etc. deliver, or 645.

Hasselblad is of course really fucking good, quality wise.

I shot a lot on a Mamiya 645, and totally loved it. Just love to shoot that thing.
It's also already a big jump from 35mm, and some lenses are great too.
They are a lot less expensive used than Hassi.

I would not bother buying even cheaper medium format cameras,
you're going to spend so much on film & developement that it only makes sense shooting it with good equipment (at least proper optics).