I just love this piece of kit! Getting hold of one may be your biggest issue. The word is out and these are becoming difficult to find.
High and almost immediate WAF (Wife Approval Factor) because it looks good and works well. The black is sexy. I would have preferred silver, which may not be available in the UK...I couldn't find one.
Friends have purchased other similar equipment and spend a lot of frustrating time converting formats. The HDX 1000 handles most formats native... it makes you lazy!
The 1080 upscaling is very good.
I run mine without a HDD, connected (wired 10/100) on my LAN to a Windows Home Server where the video files reside. Buffering is quick and it hasn't missed a beat/frame. there was an issue with DTS, but it appears to have been a licencing problem which is now sorted and enabled by a recent firmware upgrade (easy).
Navigation isn't as sexy as Apple TV, but it does do a heap more than the ATV's single format. You can also keep clear of ITunes and Windows Media Server.
You need to think about how you organise your video files on disk to ease rapid navigation. It's just like Windows Explorer so a logical folder hierarchy is all that is needed. I had mine up and running in less than 10 minutes out of the box.
The enclosed instructions are worse than pathetic, but if you access the HDX website there's lots of good help in the support forums. The enclosed HDMI cable is of good quality.
I suspect that it will be eclipsed by more sophisticated kit in a couple of years as the industry eventually wakes up to the market. For now, it is the best all-rounder I could find.
I only use this for video and cannot comment on the music functionality. The Logitech Duet Logitech Squeezebox Duet - Network Audio Player
does so much more and fits my needs.
Current task is to see if I can get the HDX to play the BBC IPlayer files, but suspect that the DRM will preclude this without some 'naughty' conversions.