Matt yes thats a good point about the 80mm.
also, I might try and get the mamiya c330 - seems to be more readily available then the rollei and more in my price range. Any suggestions on lens's for that? I have not used a twin lens camera before but excited to try. I fee like all my favourite photographers used one.
Well....
I've owned a C330 since the mid 1970s, and still do.
I've owned a 645 Super or Pro since ~ 2005 and still own the Pro.
At one time I used the C330 with up to 4 lenses (55mm, 65mm, 80mm and 135mm), had a backup C220 body, lots of accessories including a prism finder and paramender included Mamiya tripod and used all of that for weddings.
I added the 645 system for a number of reasons, including the rectangular aspect ratio and interchangeable film backs.
My Mamiya TLR system is now somewhat downsized - my original C330, 65mm and 135mm lenses and most of the accessories.
The 645 system is down to a single Pro body, plus 45mm, 55mm, 80mm macro, 110mm and 210mm lenses, plus waist level and AE prism finders, left hand trigger grip and a few backs and other accessories.
One of the reasons I added the 645 system is that I prefer the 55mm lens in that system to the 55mm lens for the TLRs - not because of image quality, but because its maximum aperture makes for easier composing and focusing.
My slimmed down C330 system is very capable, and gives me very nice square negatives that I like to darkroom print, and very nice square slides I like to project. The 65mm is a nice lens for groups of people, and the 135mm is a wonderful lens for individual portraits. And both lenses are wonderfully useful for lots of other things.
The 80mm lens I used to have for the TLR gave me lots of fine results, and if I was limited to one lens, I would have trouble choosing between it and the 65mm.
The relatively wide selection of lenses I have for the 645 Pro means that system gives me great flexibility.
If you want to experience TLRs, I am a great fan of the C330, and would never recommend against it. It certainly is larger and heavier though than a Rollieflex or a YashicaMat or ...