One Christmas present to myself later, (£4 from the local pawn shop) and meh.
Yes, very polished, the length didn't detract from the entertainment, and I could hear everything spoken through the headphones, but.......
it really wasn't that far removed from 2001 at all in terms of storyline, plus the special effects really haven't improved much in 45 years, however TARS was pretty good as the token robot though.
(It was only 20 minutes longer than Kubrick's btw)
I don't think I would have enjoyed it much more in the cinema to be honest.