Has anyone tried one of Galaxy's NAS w/ RAID?

I've been thinking about getting a Galaxy NAS enclosure (GALAXY 4500MGB Quad Bay Raid Pro) but it seems like they get bad reviews from some of the sellers' feedback.

Has anybody here ever tried one of these things? I like it because it has a built-in bit-torrent client and is a uPNP server. I'd like to be able to have it doing bit-torrent downloads 24/7 without my computer being on, and then watch movies stored on it from my PS3 or any computer in my house. Oh, yeah, and have it use RAID 5 so I can use it for backup.

Anyway, comments form anyone who's seen one of these things in action or knows a better solution for what I'm trying to do would be appreciated.

http://www.mwave.com/mwave/skusearch_v3.asp?scriteria=AA74748

I see no new firmwares are available for the 4500MGB. That's not a good sign for a commercialized NAS. NAS is not an appliance like TV and DVD player. It's a mini computer just like a router and those needs constant software support.
A well supported NAS like ones from Thecus gets that. A huge part of the cost goes into OS development of the device to prolong usage.

The exception is if there's a community of hackers working on custom firmware to constantly improve the device. e.g. the ol' Netgear NSLU2