I've used both (occasionally at the same time). The gloves work much better than the heated grips in my experience. Even with grips that get too hot to hold (looking at you Buell Uly) when at speed for any length of time the wind chill will suck the heat out of your fingers faster than the grips can warm them up. I've been using the Gerbing brand for years. I'm sure other brands are just as good, but I don't have not tried others. For reference, I'm in northern California, so temps are mostly mild with the occasional dip into freezing (28-32). I have a fairly short commute, 20 miles, and I am comfortable without any heat down to 40 deg. I only use the heated gloves during those mornings when it is below freezing.