Great riding and long lasting with very very very good puncture resistance: http://www.probikekit.com/display.php?code=Y0097
I have gone over 3000 miles before flatting with the Gatorskins. Pretty sure I hit 5000 miles before replacing my last set.
I will say that the GP4 Seasons ride a bit softer and better in freezing temps.
On my roadbike and tri bike I usually ride these: http://www.probikekit.com/display.php?code=y0072
I race on Tubulars though and last year trained mostly on Tubulars, got over 3000 miles on a Conti GatorSkin Sprinter before flatting the rear. Sealed with Tufo sealant and it lasted an other month or so before it was visibly wearing down.
I have Vittoria Pave Evo CG II on my Tubular wheels right now. Not sure I like them better than the Conti's, will see how they hold up. http://www.probikekit.com/display.php?code=Y0086
Have a set of these for my next race: http://www.probikekit.com/display.php?code=Y0031
I do like the way the green side walls look on the Vittoria's though.
I've ordered tons of stuff from probikekit.com They have great prices and free shipping to the US. Most stuff gets to me (near Seattle) in 5 to 7 days with their free standard shipping. They do run through inventory quickly and get new stuff often. So you might have to wait a few days till what you want comes back into stock, then order it quickly. You can find a current extra % off coupon code here: http://www.bikeforums.net/showthread...Kit-5-off-Code