EVERYBODY has their own opinion on this! Just use the search tab on this forum, and you'll find MANY threads on it. I have an SX as well. I always ran the Scorpion Sync's that it originally came with. They were a nice all around tire. Tried Dunlop Q2's.....handled very well, priced right, but I got the least milage out of them compared to any others I've run. I have Michelin Road 2's on it now.....very decent all around tire. Maybe a bit squirlley when the roads are COLD....but I am getting some serious milage out of them and they handle/corner great. I DO ride semi-aggressively....only about an 8th inch of chicken strip...and even in there, there's a few 'scrub' marks!