Many are still not sure which Mac Pro model they're gonna get. Let's make a list here. Post which one you bought and motivate why in a few words. Would be interesting to see which setup is most popular 
12-core 2.93GHz
Radeon 5870
32GB RAM (4 x 8GB)
480GB OWC Mercury Extreme Pro SSD
3 x 2TB S-ATA drives
Because I need the power and the space.
I opted for the 6-core 3.33GHz, 3GB, & the 5770. I'll add 2x4GB from Crucial and an SSD from somewhere.
I do software development & audio production. The hex seemed a great mix of fast CPU and multi-tasking and was just about in my budget.
I'm using a 2007, 2.4GHz MBP with 4GB at the moment so I can't wait for it to arrive!
I got a 3.3 6core because I have a very small penis and need to make up for it in raw CPU power.
What audio app?
I mainly use a mixture of Logic, Live (and Max for Live), Kontakt, Omnisphere, Reaktor, and some of my own stuff written in Objective-C/Cocoa.
Matt.
I need it because I work in graphic industry, and I went for 4 x 8GB sticks for the possibility of going all the way to 64GB later on without the need to remove any.Why do you need the power and space?
Also why did you go for 4x 8GB sticks?
12-core 2.93GHz
Radeon 5870
32GB RAM (4 x 8GB)
480GB OWC Mercury Extreme Pro SSD
3 x 2TB S-ATA drives
Because I need the power and the space.
I need it because I work in graphic industry, and I went for 4 x 8GB sticks for the possibility of going all the way to 64GB later on without the need to remove any.
Very nice. I use the same exact software and plug-ins. I don't have omnisphere but I hear it's amazing.
I did however pre-order Komplete 7 so I'm very eager to hear Reaktor 5.5.