The other thing one should note, is that tyres that work well on one bike may not work as well on another. Sticking with examples I know, pilot powers were the duck's guts on the Aprilia, but a Power / Pure combination was, er, acceptable but overloaded on the ZX14. I ended up with the M5 Metzlers, which worked OK. They did (as I was told they would) deal with the bike's tendency to stand up all the time, and the mixture and traction was pretty good... (At least once the tyre was scrubbed in, but they were a bit slippery and strange until then, and they did take a fair few km to scrub right in, none of which is a complaint - they did exactly what I needed and had asked for.) I don't know that I'd really like those tyres on another bike, but they worked alright on the 14. I'm trying to remember what I put on the R6. I know it was Metzlers, their track day tyre (er, M2 or M3 or something, er 'racetec?') and I never asked enough of them to know what they did at the limit. Yeah, I fell off once, but that was on the grass. So ... where was I? Yeah - a tyre that can work perfectly on one bike may not be that great on another. In very general terms, I like the same things no matter what I'm riding, but you might need quite a different tyre to get those things on another bike.