I had a GT 200 before my SX and a TV175 - Widestyle before that.
I believe there were quite a few GTs produced (which evolved from the TV175 which was uprated to the TV200 before becoming the GT200). There were plenty of them around before the SX was launched. I only had mine for about three months before some bar steward nicked it from outside "The Royal" at Tottenham. Still, did me a favour. Managed to afford a brand new SX and spent a bit on chrome panels, backrest and the usual "mod" accessories.