Here is a Comparison list of the current GPSs and the Dis-continued GPSs out there, and their specification's.
Once again as stated elsewhere, even though the GPS you may be re-searching are listed as dis-continued....
at say "Garmin's" website, they are still being sold at other places E-bay, Amazon etc..., and mapping solution's and repair's are still available from Garmin.
Current products on the Market
Dis-Continued Products