I have been reading all the posts about smaller coils. The question I need to have answered is: In your opinion what is the best small coil for parks and old home sites that have been torn down. These seem to be very very trashy. I have been looking at the SEF 8X6, Sunray X-5 and maybe the Minelab FBS 8. I know lots of you have used these coils and wanted to get your opinion.