What Is The Difference Between The Garmin Etrex Vista Cx And Gpsmap 60 Csx?

Does anyone know the difference performance-wise between these 2 models? I have seen a comparison chart but I couldn’t find anything that would explain the price difference…
I am looking for a handheld GPS unit that would load topographical maps on it (for hiking).
Any recommendation would be much appreciated!
Thanks a lot!