Yup, we have 5 GPSs and two of them have the SD card and those are the two we use all the time. Not only just because they happen to be the easiest to use, but we live in a very cache dense area. When we take weekend trips, each city we might want to cache in, is a PQ all of its own because of the 500 cache limit. So we always have more than one cache loaded in our GPSs. Not because we will find that many, but because we cache on the fly just looking for caches that are around us, or that look interesting. It avoids the need to preplan caches for a trip.