I been using my Solo 2 for about 3 weeks now.. I am really impress of its performance. I usually use it on the highway and no false alarm whatsoever, and It hasnt failed me yet, everytime I get a Ka tone usually theres a pig coming from the oppoite direction. I say teh average range is about 1 - 1.5 miles. Today I got an Instant on, thought I got clocked but I was able to slow down. In total it has save me about 6 tickets. Paid for itself already.