I forgot to tell you that I have a TK45 and it is crazy bright. If you get that light, I know for sure you will like it. The only thing is that it is a little overpriced. I have a magellen GPs and after some time it also started to exhibit slow satellite lock. You know all these things are electronic and it sits in the hot car. This hot temperature must degrade the electronics somehow. By the way I am sorry I forgot your name.
Raj
Raj