I have an opportunity to buy a 2008 1.5 Trek for $700 o.b.o. I'm not sure that I'd offer him full price, but that depends on how good "excellent condition" would be. After a little research I noticed that Trek downgraded the component in 08 and it appears that they raised them in the last year or two to all Tiagra. What are your thoughts on the Sora components (shifter, front derailleur)?