Q, you waited too late dawg. Oh, well, those things aren't full proof anyway. I'm not big on spending hundreds of dollars on used electronics (certainly ones that may have been sitting in the sun on someone's dash for no telling how long), so I would buy new.
The Escorts are great and cheaper than the V1. I personally have no preference, as I have used both, and they both work well. I might recomend the S1 from Escort. Wireless, quality, and less $$$ than the V1.
Keep in mind, if your by yourself, a radar detector won't help you much. These things work in packs, not when your alone.