I received my new set of warmers from PD-Warmers yesterday.
Initial impression is very good. Stitching is perfect, LED's bright, decent carrying box, etc. The silicone layers inside make them heavier than most brands I've seen, but I don't view this as a bad thing.
I got mine in the stylish red/black split-top, which look great as well. I also went with the pressure switch which will shut the warmer OFF when it's removed from the tire. No more burned warmers for me!
Full review is pending... If you're curious on them, check them out at www.tirewarmers.com and call and talk to Jim. He is a wealth of knowledge.