postalman - Thanks for the flash info! I've been a little lost in the woods looking at a Hassey and not seeing any flash mount.
jhw - I don't really expect to be doing any studio flash, but rather a handheld style for more of a snapshot situation.
degruyl - Thanks for thee heads up..!
rich815 - I did consider the rollei but I wanted something with an interchangeable system. I have plans to expand this system beyond the 80mm. I've also played quite a bit with medium format already. I've used a borrowed Yashica flex for quite a while and had loads of fun with it.. I've also borrowed an old Ensign 6x9 that I'm fixing up, but the it's time to buy my own stuff! Flash isn't a SERIOUSE thing that i'm looking into.. for now it's more of a curiosity for new possibilities. I just want to be able to do it in a reasonable way.
L Gebhardt - Thanks for sharing your experience with low shutter speeds! It's very informative, and my suspicions were such. The way the lens draws is in fact a VERY big curiosity of mine.. and I am well aware they are very different from each other.. I've been googling around to try and find Mamiya shots at f/4 but it's really hard to tell if you are looking at the real thing. I suspect that the Hassey will satisfy me more in this regard but this could be the marketing devil on my shoulder. It's complete speculation at this point.
Thank you all for sharing your experiences!