I use a tealight burner and love it. To me, tarts are stronger and scent my home more than candles do. Most of Carols and Yankee tarts I've bought were strong enough to nearly scent my entire home. I think it varies depending on which scent you buy.
I like tealights because once the wax in the tealight is gone, it goes out. I do have young children so I keep mine up on a high shelf where I know they can't be reached.
Getting the wax out of the burner is pretty easy too. Slide the whole thing into the freezer for a couple moments and the wax will pop right out. Then you're ready for your next scent
HTH some.