Recently bought a X-Terra 705 Gold and a X-Terra 505 for the wife. She now says she is not interested. What would you do ? I can still take the 505 back for a full refund at this time. Maybe I should keep it ? Does it have any advantages to the 705 making it worth keeping or should I take it back and buy another coil or 2 for the 705. Or, take it back and upgrade with another 705 with a different coil. I would like to have two detectors because I have a son that would detect with me at times or even a friend. Any thoughts on this ?