A friend of mine work in a Mom and Pop electronics store. He's in college and detector would be the last thing that he wanted to spend on.
Fortunately, he found a new old stock 645 STI back in the warehouse; the detector was sitting on the ground behind a shelf. It is still in shrink wrap. The owner told him that he could have it for the same price as the cheapest detector in store, which is a Cobra for USD40.
Now, which one should he buy? I bet the old 645STI still perform better than modern Cobra. They used to have SUPERwide Ka band detection, which is a good thing for speed camera detection, am I right?