It's doggone good, I'm only using it to play movies from the NAS and off of Netflix so it doesn't see any heavy duty use but price/performance has been so good that I'm going for their AH340-UA230N home server to replace the first gen NAS box that I'm not real fond of.
No way could I build something in those form factors for those prices.
Yeah. A guy can't build a box for what he can buy one these days. ...at least until you get up there in the price spectrum a bit.