I've had a Whislter 975 for gosh, at least 5-6 years now. It's starting to crap out so i came hear and found that the Pro 58 was best for me. How much of an improvment will i notice. I see that the dectector technology has gotten a lot better. I'm getting it in the mail today, can't wait!
oh, and i see that it comes with a "hardwire kit". What exactly is that for?