The best money I've ever spent on a car is $400 for a Valentine One radar detector. Not another brand, a Valentine One. The absolute best and worth it. Never heard anyone say "I wish I bought a cheaper one", or "wish I didn't buy that". This thing has saved me from so many tickets it paid for itself in the first year or two. It's not the one time cost of the ticket that gets you, it's the hefty insurance premium hikes for 3+ years that drains your wallet. Buy it, read manual, use it (always). Nothing's cooler than a clean record, low insurance rates, and a nice wad of cash.