I have Vittoria Rubinos on almost all of my bikes and I like them a lot. However, I think that a better tire is the Michelin Pro Race 2. I have only one bike with it but it is a great tire and I am ordering more in the spring. Are you getting your tires from Probikekit? I haven't found any tire cheaper than them except when Urbane had all their Rubinos for 20bucks and that was only on the 20mm ones.

The GP4000s are 42.38$CDN: http://www.probikekit.com/display.php?code=Y1338
The Michelin Pro Race 2s are 31.98$CDN: http://www.probikekit.com/display.php?code=Y2070