The best "bang for your buck" is going to be an AL frame. I have nothing against CF frames but for the same money as CF an AL frame will give you better components and/or wheels. Last June I bought a CAAD 12 w/105 for $1300. I added Mavic Ksyrium Elite USTs. That cost under $500. It weighs 17 lbs 11 oz and is quick and comfortable. I love this thing and I've had many bikes over the past 40 yrs.
