Well, I've had the 4.5x7 on for almost a week now. It's not enough time to post a review, but I feel it is enough time to post my initial thoughts. Yep, it gets into tight spots. It picked a Silver dime out of a yard that is infested with square nails. The stock coil missed it repeatedly. Now, for depth....maybe the coil just didn't get over any deep targets, but everything was 3"-4" or less. Was using ttf with open screen and manual 28. I hope this is not the best this coil can do! Starting to get worried, but I'll give it more time.