I am traveling to Thailand since 23 years, now being 50yrs old with German passport, and always on visa exempt stamp.

Since last year it seems using this way of entering the country is getting more and more tricky as I enter the country 2-3x during a 4 weeks holiday trip entering other SEA countries as well.

I also own a Condo in my name in Pattaya btw.

Now wondering what visa to apply for, probably DTV as I have all the requirements handy, to get not stressed with questions and evidence for my own purpose.

What is your guys recommendation in my case for 2-3 yearly visits to SEA in total not more than 120days but multiple Thailand entries?

I don't want to live there or apply for a standard tourist visa as I can't see a big difference.

As German I have also 2 passports (both German) which is allowed for critical purposes and land borders (Emirates, Israel, Cuba etc.) and I could potentially change my passport each time or so.

What are your recommendations for best and flexible options for myself?