I have an older C model and paramender if you want to try it. But I wouldn't expect parallax to be much of an issue at portrait distances. I think the lenses I have are the 80mm and the 180mm. I often prefer a TLR to an SLR for MF portraiture because the quiet shutter and absence of shutter lag for the mirror can cut down on blinking problems with nervous subjects.
I've got a C330 and a C330S. The differences are pretty minor in my opinion. I pick up one of them or the other fairly equally, the differences aren't really enough to affect the decision. Well, actually, the one significant difference between them that does affect which one I like to use is to do with the strap lugs. I prefer the way the C330 hangs - the C330S strap lugs are far too far forward, causing the camera to tilt up at an angle and dig into me by its rear hood edge as I walk along. Other than that, I like them both.
If you go with the TLR, get the prism finder as well. It makes a world of difference, and is quite bright enough for any normal application. All my currently posted 'graphs were made with my C220 and the prism (NOT the Porrofinder). I've had mine for over 20 years and love it's lightness and ease of use. If I didn't have it, however, I'd very seriously consider the Hassie. It's also light and has become really affordable now.
I have had my C220 for 14 years now. It takes great photos. But I have never really felt comfortable with it and I have never been able to articulate why. The first time I picked up my rb67... something clicked. I had my finger on the shutter release.
No, I think it's a matter of taste. I had already used a rb graplex and thought it was a great camera. It was an easy transistion to a smaller mamiya rb.
just so y'all know, I've not gotten a TLR at this point - I have a 3x4 RB Graflex model D, with a 6x9 rollfilm back. I'm still kicking around the idea of getting a C330 for studio portraiture, just for the ease of use with strobe, if nothing else. Although, I DID see a Hassy 500 EL/M (I think it was an EL/M... might have been just an EL) in my local camera store for $85. I need to call and ask what the heck that's all about.