I'm deciding between the Uniden r3 and r7. I would prefer to spend less, but arrows seem like a nice feature to have. Also, I want to get the factory refurbished ones from Uniden's website and would like to know if that's a good idea. Also, for those who have been caught speeding with a radar detector, are cops less likely to go easy on you if you have one?

Edit: for those wondering I ordered a recertified r7.