Thank you.
The UTH works like a charm for me, but know there's always a chance of cracking the glass when you mix a hot glass surface with (potentially) cold water. Just make sure you read up about it before you try it, since I will not take any responsibility for a useless terrarium
Also, I suggest you reconsider not using live plants. There's literally no downside to it. The humidity will be more stable, which means you'll need to mist less than when using fake plants. Live plants also make the enclosure better and better as time goes by, since it'll grow and fill up more and more volume of the tank. Plants are also good at removing indoor pollutants, making the air cleaner (especially plants like Sansevieria trifasciata and Epipremnum aureum).
Also, some seem to like the "I can't keep the plant alive"-argument. If you can keep a tropical frog alive, you definitely can keep a Epipremnum aureum alive.