I have a pretty nice one that I have sitting around... It is blaupunkt, sounds amazing and uses keycards as a security meathod.... the nice part is, each of the two keycards store all the preset and volume preferances so she can have one with all her radio presets and have the volume turned up as loud as sh wants when it starts, (it will always start at the set volume on the card btw) then you can have one with all of your presets. I will sell it to you for $100 plus shipping, here is a link to blaupunkt's website:
http://www.blaupunktusa.com/BlaupunktUSA/Products/ReceiversChangers/ReceiversProductDetail.aspx?NRMODE=Published&NRORIGINALURL=%2fBlaupunktUSA%2fProducts%2fArchive%2fPasadena%2520C D71%2ehtm&NRNODEGUID=%7b22069518-4E31-4FBE-88D1-142BD7C658DA%7d&NRCACHEHINT=Guest
p.s. This has been installed in my old blazer, 2 days after I had it installed, someone broke into the car neext door and took the stereo, the guy started heading to my blazer when my neibor came out. I decided to take it out as my blazer was probably worth twice as much as the reciever. Anyway, it works great, sounds amazing, looks amazing, and is an ease to use.