got a roku 2 last night... looks like max channels in models without an sd card is around the neighborhood of 963 or so... I had manually loaded about 1000 or so through a review of catastrophie girl's site a few weeks back, and it said 999 when it was trying to download it all last night (which took a very, very long time - about 3 or 4 hours I think (watched shield, and about 2 or three other on regular tv shows as it did that before it was done), lol)... This morning it's showing 963... and there is a little bit of lag in switching channels from time to time, but it's tolerable.
Now it's time to find the bad channels that don't work, dupes, etc. and delete em out.
It'd be nice if there was some way to 'sort' by channel name, etc.
http://forums.roku.com/viewtopic.php?f=28&t=46566&p=359897#p359897 -channel lists/tools
http://forums.roku.com/viewtopic.php?f=28&t=64096 -linear channels