2200 is the only mine lab I have not owned or used,but with the auto tracking should make it a easey detector to use,I would hate to give you any bad advice are there any detector clubs in the area where you live they should be able to give you good advice on the best set up for what you want to do . 10 inch coiltek coils are good, are you looking at a dd or mono.I use a 10 inch dd as a probe in deep holes and running it in cancel along fence lines and near electric fences on a gpx 5000.I also use 10 inch mono on surfaced areas I have found 0.1gram and even smaller .I would think for $3000 to $4500 you could get a gp4000 they are a good det.Hope this helps