I have never owned a Maverick, (I did have a remote thermometer, that was given to me by a Schneider's sales rep, that worked a few times until the probe quit. I actually found the thing to be a PITA), and if I did own one I might think otherwise. However, I just use an oven thermometer ($5) and peak at it through the vent. No remote capabilities of course, but still works fine, and nothing to break.
That being said I would still like a good remote thermometer, like the Maverick, for those times I'm "away" from the kettle, but really, unless I'm cooking overnight (never even tried) the grate thermometer is all I really need, so far.