Was that the air-cooled GPz-engined ZR-7S, or the newer "not-quite-a-Z1000 water-cooled Z750S?
The former is a dog, but handled better than it ought to have. The latter is a fine bike, the most powerful of the budget middleweights, and not bad for a passenger, either.
A used BMW roadster wouldn't go amiss, either. No need to be scared off by higher milages; those who can afford to buy them are typically wealthy and anal enough to maintain them. the oil-head 1150 is a good engine, and even the valve checks, though frequent, aren't expensive.