SQ6 was okay, it wasn't the ending the series deserved by any means though. I was highly disappointed when Sierra dropped the text-parsing system in favor of point and click...
On the plus side, it has fantastic voice acting, Roger sounded great, the narrator (Gary Owens) was just outstanding... I wish they had gone back with him to narrate all the previous games, not redo them with "Better Graphics" and "Now With Less Typing, And More Clicky Clicky!" but just have a speech pack with Gary Owens saying "As you lie on the floor in a carbogelatinous heap, you can't help but wonder why you bothered getting up this morning!"... I'd die laughing.
In the end, Space Quest VI wasn't that great a Space Quest game, and certainly not a proper ending for the sieries at all, but at least they haven't made a mess of the franchise by making a Space Quest VII like they "made" Leisure Suit Larry: Manga Cum Laude...