Like yourself, we are very new to Geocaching as well. We initially used an iPhone to cache and it worked very well. Of course, it wasn't great under trees and did send us here, there and everywhere on a couple of occasions, but generally did the job very well. The best thing about it is definitely the fact that you can find and do a cache wherever you are without needing anything other piece of equipment. However, my partner got the Garmin eTrex H for Christmas and after having used it on about 8 or so caches over the past couple of days we absolutely love it! It's so much more robust, weather-proof and more accurate than the iPhone. We will definitely keep using the iPhone, but probably as more of a backup to the Garmin i.e. when we spontaneously want to find a cache or if we need to double check logs/descriptions/hints etc. Either way, both are great devices!