Pulltab,
I had the 4x6 and will not down it. It was a decent little coil. I ended u getting rid of it as I didn't care for the small foot print, then I started hitting some old site that were super trashy and wished I still had that small coil, well I had purchased a 14 inch excellerator from kellyco and it is a super coil. So I decided to try the 5 inch excellerator which measures 4 3/4 inches across the center. It is a DD coil and is super in trash and I have dug many coins at a measured 6 inches. As far as the 5 inch coil for minelabs I don't know about them, minelab and white are 2 totally different machines. These are after market coils , I guess but the one I have out perform the stock coil and I think the 5 inch coil does a better job than the 4x6 did. Any ways thats my 2 cents worth. To each his own but them after market coils kick butt.
Ray