I would love to get the pre-wired Ranco; the problem is that its really expensive (I'm a poor college student) and I only have one BP. It's all I'm planning to have, too, so fiddling with the dial to get a good temp is fine, so long as its easy to set up, lol.
Oh, I just realized I was looking at the double pre-wired. Hm..$80 isn't too terrible...but still expensive for one BP.