Just got my few radar detector about a month ago. A used 8500 x50 Blue on eBay. Works flawless (was skeptical about buying used but I didn't find the forum until after I purchased).
The only thing I have a gripe with is the false alerts, I live in the city so there's a CVS around every corner and the annoying X / K alerts drive me insane. I pretty much ignore every K band now, which is dangerous because I did run across a cop with a K band and had I been speeding it would've been to late because I ignored the signal.
Where I live there are no speed cams / red light cameras (Michigan). I have the opportunity to buy a brand new in the box sealed 9500i for $330.
The GPS lockign out false alerts will make my long commute to college / work much easier and quieter.
Do you recommend it? I can probably sell my x50 on eBay for about 200$, so it's only a $130 upgrade.
Is there anything else the 9500i has that the x50 doesn't besides GPS / locking out signals? I couldn't see anything