Wow, lots of information here... Thanks! I almost wish I would have asked as a "poll" to sort into 3 categories:
- Best laptop platform? (I am guessing Durametric wins)
- Best handheld unit?
- Best B/T app (subcategories: Android and Apple)

I'm also looking for an inexpensive bluetooth and app combo... are all the ones on Amazon basically the same? I had a CEL pop up the other day... would love to be able to diagnose and fix this on my own.