Sounds like a really nice system digitaljay.
The 50 ZE and 35/2 make a great pair. I had a 35/2 for a while and traded for a PC Distagon. Some great commentary on use in the field in the comments.
Jetcode what leica-r lenses would u recommend? (non-rom/3cam) The zeiss is a bit more clear cut.
The Leica I have are as follows: (the only 3 cam I have is the 100 APO)
Nice with barrel distortion rather than mustache distortion in the 21. This is easier to correct. I have the latest version which I believe has sharper corners. Sharp as a tack and with a pro fotodiox adapter infinity focus. I had this lens sent to Adam at Steve Grimes to shave the rim protecting the rear lens element. This is necessary as this rim is rather tall. Adam did an amazing job as usual. Lens works perfect. Built in filters.
100/2.8 APO Elmarit-R Macro
I can't say enough about this lens. It is legendary. As if the color doesn't knock you out the IQ will. From f/2.8 to f/8 this lens exhibits the same IQ corner to corner sharpness and fidelity across the frame. No other macro does that. While not the sharpest macro I would never be able to tell because it out resolves the 5DII image IQ. This is my macro of choice. Note that at f/2.8 infinity focus is not possible. The lens must be stopped down to f/4 or f/5.6 to get infinity focus.
180/2.8 APO Elmarit-R
This is another legendary lens as are all the APO in the R line. Originally designed for the navy the first version (f/3.4) is amazing sharp at infinity. It's short comings are minimum focal distance. This was resolved in the f/2.8) version. This lens is amazing. The color fidelity is beautiful.
280/4 APO Telyt-R
A longer version of the lens above. Amazing quality. This lens wide open producing stunning results.
One lens I can recommend though I have never tried it:
90/2 APO Asph R Summicron
This lens is another legendary Leica lens. Some of these may come in 3-cam.