You should get the "uranium pu-36 explosive space modulator" I have 3 and they are awesome!!
But seriously I have a ranco for a year now and it gets the job done for the money. Also be aware that it makes a ticking sound when it goes on and off. I trow a bunch of newspaper on top of it and it seems to mute the sound pretty good.
I want to get a proportional t-stat this year, probably a Herpstat ND.