Let's see...In my opinion the following are better than the Michelin Hi-SPorts:
Michelin Pilot Sports
Bridgestong BT-010
Pirelli Dragon Evos
Metzeler Rennsports
Dunlop D207RRs
Dunlop D207GPs
Dunlop D208GPs
....but "better" will really depend on your criteria. If you want longer lasting tires than your BT-010...try to 020s but you will more than likely get performance degredation by going for higher mileage tires.
I had a set of D207ZRs and burned them off in 1300 miles but it really depends on what you're looking for. I want good grip and I don't care much about mileage.
In fact, I have a set of D208GPs that I'm planning on taking off my R6 for a new set of Rennsports. The 208GPs were 'okay' and even have about 1/2 tread or more on them...and only about 500-700 miles on them but I don't care for them much. But I am sure they were better than the older Michelin Hi-Sports.