Originally Posted by kabex

If you are willing to sell the Tarmac and step away from brand names you could get something that blows your current bike out of the water. Pro quality stuff.

A good example is a November Bikes' bike, full carbon frame/fork, sram force/rival including deep carbon tubular wheels(50mm @ 1370 grams), at just 15lb for $2900. That's a kick ass racing machine for not much more than you paid for your tarmac, which was 4 pounds heavier.

Or you could go with Neuvation Cycling, which also builds up really nice bikes for little money but it doesn't include carbon hoops.

Anyway, if you think outside the box you can get something outstanding, if you go with the brands then you're getting a sideways upgrade at best.