I didn't have time to read through all the replies but if you were to ask me, I would recommend a Bronica ETRSi or Yashicamat TLR for your first medium format camera. Both very durable with excellent image quality, while being affordable and "different" from the 35mm SLR-style handling.

Edit: Even the Mamiya TLRs are very nice (C330 comes to mind here)