I too use to have the 9630 (my wife inherited it).
I find the trackpad much easier and convienant. I just don't like the fact that it's called a bold. Why not call it the 2nd tour? or tour 2? or maybe even something witty like, a new and improved tour?
I agree on the timing issue but I knew from a corporate sales person that they were already working on the trackpad when they released the Tour. I went ahead and got the Tour because of my need to get a new BB every 6 months.
Back on topic:
The space bar works fine and I also have the tip to the right of the track pad... (or maybe it's just an optical illusion)