gophishin
·I don't know what your budget is, so it's tough to say, but that wouldn't be enough of an upgrade, IMO. It's a similar age bike, group is probably pretty tired, and ride quality might be improved slightly over older aluminium, it's probably not night and day. To me, it seems like bikes depreciate a lot in the first 2-4 years, and after that they kind of retain value, which is where this most likely is - my point being that you can probably get something a lot newer/nicer for similar money.
Things I would look for (assuming a properly fitting bike) would be a much newer groupset without the externally routed cables from the (older Shimano) shifters, and maybe a tarmac or roubaix from 2010-2012 or the like. Heck, even the newer aluminum bikes ride much better than they did 10+ years ago. I also don't know what kind of riding you do and thus what kind of geometry you're seeking: race vs endurance or Tarmac vs Roubaix, Cannondale SuperSix vs Synapse, etc., so that might be something to consider as well.
Things I would look for (assuming a properly fitting bike) would be a much newer groupset without the externally routed cables from the (older Shimano) shifters, and maybe a tarmac or roubaix from 2010-2012 or the like. Heck, even the newer aluminum bikes ride much better than they did 10+ years ago. I also don't know what kind of riding you do and thus what kind of geometry you're seeking: race vs endurance or Tarmac vs Roubaix, Cannondale SuperSix vs Synapse, etc., so that might be something to consider as well.