I got mine on Monday, and I cannot disagree more. I haven't had a single lock up, despite it being used for 10+ hours a day use with Plex, Netflix, Redux, and just miscellaneous mucking about. Plex's 'channel' support for things like TSN and CTV are pretty poor quality, but that has nothing to do with the device, it's the app. Streaming shows directly from watch.ctv.ca
works well, although the page navigation is admittedly laggy with the flash support.
Google Music was just updated last night with GoogleTV support, which is a bonus. I'm not running any kind of HDMI into the box though, I don't have cable and am just using the device connected to the internet, so I don't get to test things like picture in picture.
The sony backed Crackle service has a pretty weak catelogue of content, but it IS a free service, and I'm never one to turn a nose up at free streaming.
I'll be giving the device a more complete review hopefully this weekend.