I have the Garmin 110. Works great! I bought it specifically for GPS as I was tired of going onto mapmyrun/ride after every workout. The watch tells you distance, pace (though the pace is only an average over the distance) and will give heart-rate if you buy the $50 monitor piece.
Keep in mind that this is not water-proof… I don’t even wear mine in the shower! But for basic GPS/pace it’s perfect. Doesn’t break the bank, not huge and bulky and the battery life is pretty decent!
If your not looking for something with all the bells and whistles, the 110 is probably your best bet!