One thing to think about is the user experience. I have a client who first got introduced to netflix via a Blu-ray player. Her old DVD player died so we foolishly updated it with a BD player. Of course she stumbled upon the apps and wanted to use netflix.

She absolutely loves the Netflix interface on the BD player. The problem? The BD player is old and requires DAILY power cycles to work properly.

No problem right? Add an Apple TV to the mix. Problem solved!? NOPE. She wants to use the BD player to watch Netflix.

Solution? Wattbox & App so she can reboot her BD player every day so she can watch Netflix.

I am absolutely 100% convinced that this is really just about her being used to the Netflix interface on the BD player and not wanting to change. I wish we had started with an Apple TV or just replaced the DVD with a DVD.

Point here is that with Roku or Apple TV the UI will be similar (hopefully) enough from model to model that you wont end up in crazy land like i did.