I've been a Tivo subscriber since 1998, at least. I steered many friends toward the box. A a couple of them picked up Premieres and were plenty disappointed. I happened to be at the house of one friend as his HD menus crashed again and again. I managed to set him up with SD menus.
So I resisted for a long time, but got one a couple of weeks ago and moved my Series 3 HD downstairs.
I must say, I have been nothing but pleased with the Premiere as my main box and the HD menus. No lag, no crashes. I can watch shows as I surf the guide. Just very impressed, considering all the reviews I read.
So kudos to Tivo for fixing what was wrong. Keep it up!