Lenses to buy?

[DVXFlash]

Hi! I'm looking around for some good lenses for my EX1-SGBlade rig.

Something like this:
50-150mm
50mm
35mm
20mm

Any suggestions of brand? Zeiss, canon..etc?

[DVXFlash]

I'm buying myself a canon fd 50mm F1.4 now. Thinking of buying canon 20mm F2.8 - any other lenses more recommended in that range? 14-55, 10-20, 17-35 something?