I do not know about the rest of you but the case I had for my original Garmin Legend was one of my best investments. I banged it around a lot and dropped it on occassion and it escaped injury due to the case.
When I bought my Garmin 76S, I was disappointed that garmin did not make a case for it. I did get the belt holder (which is great) but I still have been rather wary of scratching or damaging it when caching.
While searching the net I came across http://www.gpsgeek.com which sells some great neoprene cases at a very reasonable price. I got mine today and it is great. It even has a velcro strap that I can attach to my handlebars if need be. So if anyone is looking for a case to protect yours – might want to check it out.
They also have some of the best prices on GPS units I have seen through a commercial source.