thinking of selling my garrett atpro and upgrading to sdc2300 any thoughts pros cons good stuff a lot of $$$$$ are they any good at treasure hunting or just gold thanks in advance for the advice
What are mainly looking at detecting - gold or coins/jewellery/relics?
I think you will find the SDC would best suited to either gold prospecting and/or beach and underwater detecting. Considering how sensitive it is, and the lack of any form of discrimination, you'll be digging too much junk in parks etc. It could be done, but there are more suitable detectors for that purpose.
If you want to upgrade for general detecting vs prospecting, maybe look at a higher end VLF or multi-frequency detector (CTX, Deus, Etrac, Fisher F75 Ltd, etc).