Either the 1995 Twixtown or the 1996-1998 version. Yes, that's what I said.
The fairground theme just didn't do it for me, sadly. The intro was awesome though. The Pepe Jeans theme, well, the intro went on for a bit, especially before the tune kicked in. I really liked the music for the start of Part 2, though. Just something about it...
As Steve said, the 1995 version was lively and feel-good. Just a shame The Vault would have a nightmare editing it. I preferred the Top 10 intro in 1995 rather than the 1992 version, as that dragged on as well. Originally, I wasn't too fussed on the 96-98, but I grew fond of it when I was working with it on my Chart Show recreation.
And yes, I'm still aiming to make that 1995 version which I said I'd do ages ago...