Generally speaking, I feel like stand-alone boxes that connect to streaming video servers aren't that great a deal - because that's ALL they do. You also need to subscribe to all these services
(except for the ones with the 'FREE' flag in the upper right-hand corner) in order to get the most value out of it.
In my estimation, if you already have a current-gen video game console (Wii, Xbox 360, PS3) then you're best off just adding Netflix On-Demand to that... ESPECIALLY if you already have Netflix. There are also Blu-Ray players that come Netflix ready, so if you were thinking of upgrading your player, you could go that way.