I started with the Minolta Autocord. I was in the Navy, needed a TLR to do some weddings, and didn't have a lot of cash. It served me very well, and I paid for it in about 3 months.
Next, I traded the Autocord for a Yashica 635. It worked nicely, although the 35mm adapter was a pain. I then traded it for a Yashica D model. It really worked well for weddings. It was virtually useless for head-and-shoulders portraits. After that, I stayed with Yashica by way of a MAT-124. It worked well, but I was still using two different cameras in the studio.
I finally tired of the constant changes, and went to a Mamiya C220f, and used interchangeable lenses much to my satisfaction. The crops were easy, and a lot of customers liked and bought 8x8 and 10x10 portraits. It also worked well for weddings. I liked it so much, that I invested in a Mamiya C330f; finally retiring it when I gave up my portrait and wedding business. Last year I bought a C330s, just so I could shoot a good TLR again. It's still a great platform, although not as sleek as my Hasselblad 500 C/M and a Bronica SQ.