hi! i've got a set of Nanos and a set of Rampages on my Sultan. love the speed and light weight of the nanos. love the grip of the Rampages in tougher situations, but boy do they feel heavy and slow. i want to get another set of tires - something inbetween these 2 - not so slow and not so heavy in the neighborhood of 650 grams. what are you guys going with today? any suggestions?!! thanks!