I can agree that the Paiboon romanization (g/k, b/bp/b, d/dt/t) is probably the most intuitive for English-speakers.

But it's silly to say that it's the best system just because it is easiest for people like yourself.

I do think something IPA-inspired (k/kh, b/p/ph, d/t/th) is consistent and still usable. It will also encourage better pronunciation (at least for somewhat serious students) if they are trying to say the correct sound (unaspirated /k/) instead of approximating it with an English phoneme that isn't used in Thai (voiced /g/).