I'll be going to PA for the 4th of July and was wondering if I should get the XTR-695SE or 690SE. I currently have a XTR-150, which seems to be okay, however I haven't had a chance to really test it since I live in NYC. The problem is that police don't really use K or KA band on the highways, its all pretty much Lidar. I usually don't speed more that 10 mph over the speed limit, so I was wondering if my radar detector would cut it on PA interstates. I hear they pretty much always use C/O K band, which in theory should be easy to pick up, even with a basic detector. How good is the 690SE and 695SE, and what's the difference between the two?