I use the B3 Ranco controller with the stopper thermowell. Seems to work well so far.
To heat, I use a FermWrap heater that I wrap around the bottom cone. I tape it on with blue painters masking tape. Temps range from 45° to 55° in my garage right now and I pushed it up to 75° yesterday to finish off a biere de garde. I haven't seen if I can push it any more than +30°.
To cool, I'll be getting an upright freezer some time over the next month or so. It'll look a lot like what Blichmann recommended on their site. I'm estimating about $100 or so on Craigslist.
I'm not really crazy about getting another fridge/freezer. I think I can get away with just the heater for ales 8 or 9 months out of the year her in Portland. But I'd really like to get back to lagers soon and maybe ales in the summer and I can't rely on ambient temperatures to get cool enough.