Don't know which Yammie you mean but I know someone with an 1100 cruiser its called V-Star or something and I think its mid 90's. Cool bike.
I had a series of bikes which were not that cool including a CBR250N super dream and a VRF400R, then got a GPX750R Kawasaki which was quite old but pretty fast, did about 140 mph.
Two years ago I got a ZX9R but people I knew had Fireblades and R1's and berated it.
Do you know more about the bike you are looking at ? Model number ? The old Z1000 is a good bike if you find a good one.