Take your time,look at brands and go to a dealer,they will give you a feel for the unit.I have used the MXT and is a very good unit,I am using the CZ3D now and love it,I have a new Explorer II and trying to get use to it,not very happy with it now,maybe after using it will change my mind.Back to the you.There are good units out there in all price ranges,your local dealer can be the best info,I drove 200 miles to get my CZ and glad I did,they showed me the unit and gave me tips,I also got to swing it in the field before I made my mind up.See if there is a club near you and see what they are using.Also look to see if there are coils that can be changed and prices on they,remember if you get a detector to use in all modes you will need one or two coils for the areas you hunt.My whites MXT I had these coils,5.3,3x6,6x9,stock,12.5 and the bigfoot.All the coils have a place to be used,remember not one coil will do it all,well it might its just some work better then others,your ground type can play a roll too.I have spent alot of money on detectors only to find something out there better,I should have kept some units and should have never bought others.Will all I can say is take your time look and read on the forums what people are using and the area they are using them.The Whites MXT is a very good unit,I loved mine and wish I never sold it.