My son heard i was wanting a GPS and he found the garmin 72 at walmart for 75.00 it showed it was normally 134.00 he bought me one for Christmas and it works great for showing speed. Everyone else will tell you the the garmin 76 map is alot better unit, but if you just want the speed feature and waypoints the 72 works great. It doesnt have all the features the 76 has and it has less memory.http://www.gpsdiscount.com. is a good place to look at them and compare the different units and theyhave all the accessories you'll need.