The addition of the hard drive improves the fast forward and rewind functionality since, once the file has been cached, the EVA9150 is accessing the local copy rather than pulling it across the network at high speed.

The hard drive is encased in a removable caddy and can easily be upgraded
Hit the power button and by default the machine will go into standby mode, which keeps the disc spinning and network access alive, so you can drag and drop files onto it without waking it up. It'll be ready for action in about ten seconds in this mode. Alternatively, you can set it to power down more fully - either when you press the off button or after a period of inactivity - which saves juice, but it'll take around a minute to start up from this state.
In addition to playing back content stored on your network, the EVA9150 can also pull in files from the Internet. Full YouTube access requires the PC software to be running, but most of the functionality is available in standalone mode too. As the unit now uses the high quality YouTube video by default, the results aren't bad. You can also access video RSS feeds and the content is cached to the hard drive, so playback is pretty good.
The remote control has also received an overhaul and feels more sturdy and robust than the previous incarnation and it now doubles as a universal remote control for up to three other devices.
The biggest problem with the EVA9150 is its price tag - at £380 it's an expensive piece of kit. It's considerably more than the EVA8000, which had an asking price of £220 when it was introduced and can now be picked up to around £160, if you know where to look online.

Media selection is swifter after indexing
The market has also moved on significantly since the launch of the EVA8000. Back then if you wanted to watch 1080p material you either needed a dedicated Blu-ray or HD DVD (remember them?) player or a pretty powerful PC. 1080p from a standalone streamer was unheard of. Now you've got devices such as Popcorn Hour's A-110 which bundles full HD playback and even a 500GB hard drive for around £250.
COMMENTS
Waiting
I'm waiting to see what Nintendo will do wit their Wii in this respect. As soon as they role out an upgrade/software to stream media from your internal network they will be tapping into a large userbase v.fast.
Re: Getting there
"Well it sounds very nice - anything that can handle MKVs immediately gets a gold star from me. "
Looking at the netgear site I see " MKV (with AC3 only) "
That seems like a big limit since MKV can contain almost anything...
With the latest update the WD TV is a much better MKV player, still not perfect though.
A PS3 or XBOX360 will do it too
Either of the current beefier consoles will do most of this too with the right free software ( PS3 Media Server) on an existing PC. The PS3 plays Bluerays and Rental disks etc without having to rip them first too. They will play games too.
Standalone on its own
"...let it operate as a standalone unit all on its own."
And what else may "standalone mean", other than "on its own"?
WD TV
Unless you really need the Network side of things, it's far cheaper to get the Western Digital TV too.... plays everything i've thrown at it so far and with minimal fuss!
http://www.amazon.co.uk/gp/product/B001ILFDCK?ie=UTF8&tag=spoavetstu-21&linkCode=as2&camp=1634&creative=6738&creativeASIN=B001ILFDCK
Or built a HTPC and do it properly.....
