My original tires were Pirelli Sport Demons. It is a very nice performance tire - stick like glue and the rear tire wears out in 6 - 8 thousand miles.
My current tire is the Bridgestone Battlax BT-45. The rear tire has a strip of harder rubber down the center to allow for more mileage before you get the flat spot down the center. I like this tire as it can be bought in a 100/80 front size - but I don't like the diamond shape pattern on the front tire, when they get some mileage on them they start to make a buzzing noise when you lean over for a turn.
The Avon Roadrider AM26 comes in sizes that will work - it may be a good tire but may not be as sticky as the above two. The "Land Speed" folks use these tires as they are available with speed ratings suitable for highs speed record attempts.
The Michelin Pilot Activ now comes in the sizes I use, and it may be the next tire that I try.
Here is the thread on the Cafe' tire discussion - the purpose is to show why you don't want to install a 130/70-18 tire on a rim that is only 2.50" wide.
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1435340395/0