I got one for Christmas about ten years ago that was a very nice one with a metal body to it and a dial to set temperature. I loved it so much that I bought 6 more from Amazon, just the cheapest plastic ones they had, and that was just shy of ten years. They all are still working great. The cheap ones just have one pre-set temperature, but they are warm enough to do all that I need. The one with a thermostat, I just keep turned all the way up, anyways.
So, no, just get the cheapest, IMO.