You can really save money if you use the Raspberry Pi for torrent downloading (your electric consumption is like just charging your smartphone 24/7) rather than using HTPC or desktop which is using 300w or higher.
There's also the headless setup. For torrent-ing, using only the power and lan cable: <click here for link>
Above is a stackable laser cut Raspberry Pi Casing from 3mm clear acrylic. You can see more pictures from this FB Photo album: https://www.facebook.com/media/set/?set=oa.438278512878016&type=1
It only cost Php 400 each.
