I just got one and built it up last night. It's a nice looking case with mostly nice build quality. The volume knob on mine rubs a little on the inside, so the feel is not as good as a quality piece of gear. The LCD display is pretty ugly imo, but I didn't plan to use it or the knob anyway. I think the one with the VFD would look much nicer.
It is very quiet with the large fans switched down to the lowest speed. I had to connect the power switch to the LCD display in order to get both remote power on and the power button to work. I don't know why they didn't just do this at the factory. The pins are there, the cable just needs to be routed through the chassis and plugged in.
The IR was recognized as a USB composite device and Win XP installed it automatically. If you are using the iMon software, don't install the software from the CD. Download the latest from Antec. The software on the CD was horrible and it made my PC do weird things, but the latest version seems OK (so far anyway). I was able to map keys on the remote to key commands in xbmc. I really haven't used it yet, but just messing around with it, the remote seems to be working.
I don't know how the built in remote compares the the MCE remote and transceiver, since this is the first PC remote I have used, but I have an MCE remote on the way so I can compare when it gets here.
Edit: Just saw you plan to use it with Linux, do some searching, there should be a way to make it work with LIRC.
http://hubpages.com/hub/How-to-configure...y-on-Linux