I had a similar issue with my AA coat. The lower inside lining of the coat was getting torn up. Turns out the problem was the Velcro on my bibs did a good job of sticking to the inside coat material and the rubbing it off. My solution was to buy some press on patch cloth at Wal-Mart and apply it to the coat. The patch sticks really well to the inside coat material and it fixed my issue. Note that you do NOT want to get the iron on patch stuff!!!

I got the Garmin GPSMAP 78S last year and really like it. It is expensive but you can find good deals every now and then. One nice thing is that it floats which can be very nice if you are using it around water. If you are using it in the winter you want to be sure to use lithium batteries as they work much better than alkaline batteries in cold weather.