I have a 220 F (last model) at the moment, with a 80/2.8 blue dot. After a few rolls, here is a few of my impressions of this model:
It's a bit heavy, and I am not sure about the placement of the film winding knob - it interferes with focussing, which I tend to do with the right hand.
The shutter button does not have the same feel as the Rolleis. It is also a bit louder, an industrial "plonk" rather than the "snick" of the Rollei. With a bit of bellows extension, it gets harder to use the shutter release as it sits on the side of the lens panel. No hesitation is allowed when you press the shutter. If you press down slightly and change your mind about taking the photo, the camera locks and you need to wind on, giving I got several blanks because of the double exposure prevention kicking in. The manual says you have to switch to multiple exposure and press again, but it is a strange design "feature". The Mamiyas does not suffer from the "bent back" issues of the Rolleis as noted above. Very easy and fast loading.
The great assets are the close focus, a large very bright viewfinder and the different lenses. Overall if you like the TLR idea, the Mamiyas are a great and inexpensive system, especially if you want wide angles. If you need a 80/2.8 lens, the Mamiya is probably cheaper than the Rollei 2.8.