Palomar SL 41 is a newer model mic out there too. Buy what you think will give you the best results...
The SL41 is a great mike, but you're not likely to find them in truck stops. Walcott has them, and probably some of the other larger CB shops.
Probably never find a ranger mic in a trk. Stop. But hopefully Eric can get the Palomar Mic in them soon. I'm sure it's a very good Mic for certain radios.