Until I really started to look into this - no all DLNA born equal: I have DNLA in my galaxy s2 phone, my tv and my netgear media client - for most part they partially or fully incompatible other than really basic functions like jpg and mp3...
Yea, file shares work much better and render of media depends on device chip, not middle men (dlna specs) on both sides
Picking media client is a bit harder task - WD TV Live plus could be one...
Dune hd is owned and highly recommended by BMXTrix who' Pro A/V installer
Me and Sholling use Netgear NeoTV 550 which is on sale at B&H for $85
Netgear NeoTV 550 Ultimate HD Media Player NTV550-100NAS B&H
So far I could tell you - It plays almost everything you throw at it : DVD and BD ISO, HD audio passthru, MKVs, HD Flac etc.... - I never had issues with out of SINK

My dirty dishes seem to keep themselves safely in sink

until me or wife washes them
However it's interface design is pretty basic and Netgear stopped making new updates for it since about year ago...
That all said - at $85 you can't go wrong and get rid you your aging D-Link
