I'm very new to cycling, and am in the process of buying a road bike. I've got my choices narrowed down to two bikes, the trek 1000 or the Felt F75. The F75 has carbon forks and tiagra and 105 compenents compared to the trek's alumnum forks and SORA hardware. Is spending that extra 200 bucks worth the investment? And if anyone has rode either of these bikes, what did you think of them?