I am looking for wisdom on the subject of old vs new. Here is my dilemma. I have a Gary Fisher Hoo Koo E Koo 26inch with Shimano Deore LX gear and Bonrager seat post, cranks and seat and head. Forks are Manitou spring forks. On the wheel I have a 1 year old Shimano M770 9 speed cassette. The bike is 13 years old and has served me well. Recently I broke the frame but no fear as this has a lifetime warranty. However, most of the bikes these days are 29inch. They are looking for a replacement frame but we also had a few discussions around upgrading. I have been offered a Trek X-Caliber 7 in replacement for $500. The original bike cost me $1800. The X-Cal has Shimano Acera gear and a HG20 cassette. It does come with Rickshox front suspension and Hydraulic disk brakes which is an upgrade from my V-Pull.
Bottom line - Is it a good deal? How well will the Acera derailleur last? Reading the net this is the weak point. Is the frame only worth $400 (the X-Cal will retail for $900). I will have a new bike but it will be a lesser bike than my old one by all accounts. Thoughts please?