Hi,  I have some All Black Foldable Vittoria Rubino PRO 23 x 700C Tires.   These are about 220 Grams each.  They are more durable then the ever popular Michelin Pro-Race modesl.  A little less supple then the Michelins,  but are a bit longer wearing and have greater puncture resistance.  My impression is that I feel more confident on fast descents with these, but find that I like the cornering of Micelin tires a little better.  But, heck, I don't want to go down, so I have become more consevative on twisties as of late.      The RUBINO PROS retail for $110.00 the pair, but of course, are sold for less from various folks on the NET.  Get them direct from me now for just $27.00 each.