go with the tub, its much much easier to keep humidity in and if you go with a UTH and a light it will kill your humidity, I struggled with that for a month before i switched over to tubs and its night/day difference. You can either get a thermostat, or a rheostat to control the UTH, most will say thermostat, which you will need in the long run, but a rheostat is something you can use for the time being