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?
Swapping any components from a early 00's frame to a 2014 frame will be hard, the only parts that haven't change spec significantly are the rear derailleur thread size and the pedals, just about every other part on you GF will need to be replaced to fit a 2014 bike as they won't fit.
For your current bike, not sure where you paid $1800 for it, BITD it was a mid level bike, Bikepedia list the 2003 (earliest spec'd with Manitou forks)model as $819 2003 Gary Fisher Hoo Koo E Koo - BikePedia looking at the current Trek range, a comparable bike would probably be a 4300, although whatever you get, a lot of new parts will be needed.
For gear, Shimano Acera is good, Deore is a lot better & a different speed, Deore LX is long gone for MTB's and is exclusively touring/trekking now, it was replaced by SLX about 10 years ago.
If you are looking at changing wheel size, would avoid 29er's they are on their way out just like 26", 650B/27.5 is where it's at now.
Thanks all for the insight. It's good to get other perspectives. $1800 was Aus dollars so probably exchange rates, taxes and current pricing in Aus. It was reasonably competitive around the shops for similar bikes. General concensus seems that Acera is actually OK. Some notes around the net state some parts are plastic and can break. Not sure if that is just in the shifters. I think the shop thought a 4900 would be a similar frame but not sure if they have one or if the parts can be transplanted. So this can work in my favor for negotiations maybe.