that's too much... I don't want too many devices, the less the better. I already have a PS3 and a STB from fios. If I can, I'd only have 1 device...
Trying to find one device that will do it all that isn't an HTPC is a fools errand. The PS3 has a terrible front end and most dedicated devices lack any real power for a truly smooth UI. A $599 Mac mini is expensive but serves as an excellent HTPC as well as transcode videos to mobile devices.