I haven't read this thread, but I've just watched
Encounter at Farpoint. I absolutely love the live action sequences. And while I have an absolute respect for those who worked on it and an understanding that the HD-ening is designed to showcase their efforts, I have to say that a lot of the model work looks distractingly like model work. It's not convincing enough and takes me out of the moment occasionally.
Other than that minor quibble (and it is a pretty minor one for me) I'm utterly sold and will be purchasing the seasons as soon as they're available!