Your thoughts and advice is asked for by a European citizen who is under age 50 and loves Thailand.
I share this.... with his permission:
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"I have been in Thailand since February and left last month...July
I did land border runs twice in 2019...which is my limit ...as it can be done only twice a year, if I understand it correctly.
I want to go to Thailand again at the end of this month...August
I'm not sure whether I will be allowed to come in ....or if I shall apply for Tourist Visa which is 3 months instead.
If I will be able to get the Tourist Visa, I am not sure.
And I have a new passport recently if that makes difference...
No stamps at all.
Also in 2017/2018, I used to go in and out every two months for couple of months... to Malaysia then back... which is not what they like...
I presume too.
Seeking advice.
Thank You.
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TLDR : Answer Summary
A European citizen who has used their limit of border runs for entry into Thailand is seeking advice on re-entering the country. They are considering applying for a Tourist Visa as they have not traveled back with any stamps in their new passport. The comments suggest that a Multiple Entry Tourist Visa (METV) could be beneficial, but note that past border run activity could affect re-entry.