The only thing Garmin won't update for now probably is the firmware and if your 60CSx is working O.K. why worry about it? You can always update the GPS any time you want. I have heard the 3 axis compass in the 62s can sometimes be a pain to calibrate. I have the 76CSx with a full set of maps which basically is the same GPS as the 60CSx and I'll probably hang on to mine until the day it dies.
I haven't followed it too close but there is also talk about the government eventually replacing the existing satellites with a new breed that will be more accurate but the present GPS receivers won't be able to use the new signals. The only thing I don't know is what the time table is.
I haven't followed it too close but there is also talk about the government eventually replacing the existing satellites with a new breed that will be more accurate but the present GPS receivers won't be able to use the new signals. The only thing I don't know is what the time table is.