I have one. I suppose to some it up in one word would be 'big'. The motherboard in it is huge and the case is a full tower case. Also, as everyone else has mentioned, it is heavy. Except for the front panel, it is all made of solid steel.
While mine still works, it needs some work since the last few house moves were not kind to it (nor were some of my past flatmates). I need a new key lock which goes on the front since some of the pins went missing on the 3000T I have. That was one of the things I found quirky about the 3000T, if you wanted to reboot you computer, you could just turn the key lock on the front of it, and that would reboot it.
It also had the advantages of the regular 3000D ie. VGA connector and 31Khz mode supported natively.
