Personally, I'd go with the black, considering your workstation has a black theme. That way, it matches :) Plus, you can always paint them. :)
Also, what stand is that. I know, I know. Yes, I'm still looking for a stand. I'm just too cheap ;)
That is a full pod of Dell blade servers. They are typically used in compute clusters of some sort. My guess would be either a VMware farm or render farm.
I agree with you about the handling part. I was lucky enough to get my order in within a couple of days of the launch. I just gotta wait for Element14 to ship it :D As for the certifications, they had to go ahead and do the certs because the product ended up having a very high demand from people...