So I haven't started geocaching yet because I don't have a gps unit. I was thinking Garmin 60csx or Vsita Hcx but now I'm wondering if I haven't researched other brands enough? Are there any additional cost to owning other brands like a monthly payment for service? What is the accuracy compared to Garmin? Pretty much just list you GPS device and brag away, add a few cons so I know what to expect.