i think Moxie and myself are the only tdi user's Zip . you can just post here with questions or just pm one of us , Moxie is very experienced with the tdi pro and i've been ising the sl for the last few months. welcome to the forum , glad you joined us here .
I have come to the same conclusion. My second detector needs to be a TDI. I am looking at an new SL, used TDI, or TDI Pro. Which way did you go and would you advise the same. I will be using it on relics and beach.