I decided to save some money (about 40%) and order my dew-heaters from a relatively new company, R-Sky.
I asked them a few questions, via e-mail, and they responded very quickly and completely - I like good customer service and they seemed great.
So, I ordered the following:
1. A two channel, four output controller
2. A 3" inch strap for my guidescope
3. A 5" inch strap for my (upcoming) AT155edt refractor
4. A 6" strap for my Mallincan 6" RC
When I ordered, R-Sky immediately sent me a tracking number. I could see that they were shipped within a day of my ordering. It took about 10 days for them to arrive. It turns out the R is for Russia. They came from Russia - interesting.
All the straps and cables seem very well made. Nice velcro patch, slightly stretchy, and the cables connections feel very secure.
The controller is solid and small.
I plugged everything in and they all worked like a charm. They are great.
The only possible downside I can see is that if anything goes wrong, shipping things back and forth to Russia does seem to take about ten days each way.
Overall, their service was great and the products appear great, so I give them 10 out of 10.