Hey guys, I am new to cycling and looking for a good road bike. I plan on doing charity rides, occasional races, and riding 3-5 times a week. I am considering spending $1500-2500 on the bike. I think I have narrowed it down to three bikes, but am open to suggestions. Bianchi Sempre pro 105- $2400 Bianchi Vertigo 105- $2000 Bianchi Impulso Ultegra- $1700 I was wondering how much better of a bike I would be getting for the extra $400 from the Vertigo to the Sempre pro? Would any of these be good road bikes for what I've described? It does not have to be a bianchi, that is just one of the brands along with specilized and focus that my LBS carries. Thanks in advance, Chris