Netflix on PS3 goes disc-free, gets 1080p streaming and 5.1 surround sound
Netflix streaming on Xbox 360 (as of Dec. 6, 2011) has support for 720p HD (bandwidth allowing) and Dolby Digital 5.1 surround sound so movies and TV shows streaming from Netflix look and sound great!
Roku 2 (XD, XS, XDS models) was updated to support 1080p/5.1. If a title is available in 1080p, you will automatically receive a 1080p stream provided that your Internet connection has a fast enough download speed, you have a 1080p-compatible HDTV and you are connected to your HDTV via HDMI. Not all Netflix titles are made available in 1080p. Note: Previous Roku player models will not support 1080p streaming.
AppleTV currently only streams Netflix at 720p.
Netflix for the Wii has no HD is limited to 480p.