All those alternatives will work but I think GP Supersonics are a bit fragile. I've never used them personally but I know those who do and won't TT on them unless they know the roads are good/clean (or they're feeling flash and it's an A race).
May as well stick with what I know and get on well with then. Top priorities are low rolling resistance and grip in the corners but no point having the quickest tyres then suffering punctures mid race
How about having it confirmed by two idiots?
All those alternatives will work but I think GP Supersonics are a bit fragile. I've never used them personally but I know those who do and won't TT on them unless they know the roads are good/clean (or they're feeling flash and it's an A race).