I have been out of cycling for about eight years now and have recently redeveloped the itch. I got out my 13 year old Bianchi Giro and was amazed at how uncomfortable the geometry was. I guess I am too old to have my head lower than my butt. I would love a new bike but the wife is on maternity leave so money is tight. My componants are Campy Athena 8spd. Not state-of-the-art but the controls are dual control and they have relatively few miles. Would it be sensible to buy a used frame with modern geometry? I would also be looking for a carbon fork and would need a new headset, stem, bar, and seat post. I could get a decent frame/ fork and other needed items for around $400 whereas a low-end bike would be $700 with Sora componants. I was told that even low grade Shimano would work better than my dated Campy pieces. Is this true? Any input will be appreciated.