Upload & Sell: Off
I have just the 35/1.4 and 180/2, and both are fantastic. My main concern is the alt nature of using them, i.e. no auto aperture, no EXIF, and so on. I also own a slew of ZF.2 lenses, so I am actually considering selling off the 35/1.4, even though it is slightly better optically than my ZF.2 35/1.4. I put a test of both against each other somewhere in a Leica vs Zeiss thread recently. They are very different.
I have tried and love the 50/1.4 E60, but it is soo pricey. It is also hard to focus, I find, but the look is awesome. I used to own the 80/1.4 and would love to own it again, and the 100/2.8 I have always wanted to try. For now, however, I am holding off on all of these, since the ZF.2 lenses pretty much fill my needs and are easier to use day to day.