Mine was an 84 ZX9! still ran like a champ when i sold it last year after buying the V1000. Im happy with the power band of the 1000, it was just a shock my first few rides out.
Erock, I bought my '85 for $125 as a basket-case wreck from a coworker whose cousin owned it. When I 1st saw it it looked like it had been dropped off a cliff and rolled into the ocean.
16 months and $2200 later, I had restored it to as-new. A lot of motorcycle salvage yard parts from 10+ yards across the country, the only original parts left on the bike were the basic engine, frame, and rims. I found, one piece at a time, all of the '84 body work, fireglow red and charcoal grey, which, to me, looked better than the '85 body work. If it was good enough for Tom Cruise in "Top Gun", it was good enough for me!
For its time, it was DAMN FAST! Very peaky, like a passenger jet with an fighter jet engine equipped with a afterburner.
I had it for 6 years, got all my money back out of it when I sold it after buying a new '00 ZRX1100, still in my garage, parked just behind my '14 Vstrom1000. I still have the factory service manual for it.
The ZRX has the same basic engine, just with more torque down low and much more civilized.