Cubase 4 users on Mac, happy?

Have any of you Cubase4/Macpro users had any problems with a high number of I/O? 32 channels in and 32 channels of playback? Crashes?

I am looking at Cubase on a new Mac once they have all there ducks in a row with the new OS. I played around with Logic the other day and wasn’t crazy about it. (No mono out on a mono track?) It would be rare that I would be tracking that much at one time unless I am re-tracking through outboard and printing analog effects. I left ProTools Mix 2 years ago and never had any problem with multiple I/Os but I have yet to use a Native system.

I will probably be using a Lynx AES16e and a pair of Aurora 16s. Does this seem like it would be a stable system for tracking/playback up to 32 tracks at a time? All my cue mixes will be analog by the way.