I bought one new in '04 and it is still going strong. The only fault I had was that the charging system packed up and I had to replace the rectifyer/regulator. Apart from that no problems.
I have done 70k miles, mainly weekends with a few longer trips. Never had a problem with aches/ pains even riding 400+ miles a day (I'm 6ft). My girlfriend loves it. We did a 2500 mile trip over 2 weeks a couple of years ago with no problems. It is not the quickest through tight corners, preferring A roads, and carries it's weight quite high up, but on the move this is no problem.
If you can find one in good nick I would definately recommend having a look, I don't think you'll be disappointed.
I just wish Triumph would make a new one as I will probably look to replace mine in a year or so and have no idea with what.