You say they aren't that great but they are by far the best tyre out of eagle f1s, RE040 and FK452 that i've had so far.
They may not be as good as the supersport but in many cases i think they outperform the chassis of the Z.
I'll have a look into the VUS though, just don't want to spend a load of cash and be dissapointed
eagle f1 gsd3's are probably my favourite tyre so far..
It really depends on how you're judging the tyre. I know Ekona and myself usually think about how it handles the driving on track and very enthusiastic driving. Whereas others may think of it in terms of normal daily driving.