Ahia5

Is this unit still available?

We are new to Geocaching this past weekend. We did okay finding 2 of 4 caches with the Garmin Streetpiolet c330. We had bought 2 this past summer as we relocated to the Metro-Atlanta from Ohio. Now that we are into this sport, I am wondering if I should by a handheld or does anyone have luck with a GPS like ours? When we found the caches they seemed to be about 30 ft away from where the Garmin said the cache was. I would not mind spending up to $250.00 on a third GPS for geocaching but fear it wouldn't be any better than the ones we already have. Does anyone have experience or advice concearning both kinds of units? Thanks in advance for any help! Ahia5