I rode an '85 Tomos for a few weeks last year.
I went over it and tightened all the loose rattley parts, replace the brake shoes, changed the gear oil, but it always felt flimsy, and I didn't like the way the brakes or the shifting felt.
It just didn't seem as "solid" as my Yamaha QT, though it was faster. The clutch finally locked up on it, and I gave it away.
I've put about 2000 miles on my '87 Honda Elite since March, and except for some "catch-up" maintenence and a siezed piston (caused by the last owner not properly mounting the oil injector cable), it has been fast, quiet and trouble free, as a Honda should be.
I'm with Fred. I'll take a Japanese bike over a Tomos any day.