Took the 12X15 SEF out for the first hunt of the year. Went to the park that Derrell and I beat to death last summer and hunted for a couple hours. Marked some signals with the Pro coil then switched to the SEF for comparison. Both coils was able to get all signals but one, which turned out to be a wheatie with a large nail and melted slag in the same hole. The SEF hit all signals harder and ID'd slightly better in my opionon. All in all, 2 injuns and four wheaties from this park was outstanding. I think it's a keeper