Just bought one
I like it a lot.
Issues...
Not so much a problem with the 'phone here, but I've had no end of hassle with DLNA on W7, so copying media across has been a total faff. If you're not using the default W7 locations for your media then WMPnetworkSvc fucks up the permissions on your directories and you have to re-establish permissions for yourself to get write access to your own folders.
The built-in DLNA app does NOT like massive directories. When you go into any location it wants to index everything (including subdirectories) so if like me you have tens of thousands of music files under one folder you can pretty much forget about ever getting to see what's in there. Going to start looking for alternatives.
Another problem (which I doubt is exclusive to the Defy) is that, if you copy JPEGs across Android seems to want to ignore filenames and rely on EXIF tag data for presenting them. This is a problem if the tag it chooses (in my case camera make/model) is identical throughout all your files.
