I don't really think it matters, no one is consistent, no transliteration covers all cases. Unless maybe ipa? (which no one uses to communicate anyway).
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/).
But I do think that an intuitive system is better than an IPA inspired system, and that's purely because of the fact that only 1% of people will be using it and understanding it. The other 99% will be using other, random, variations. However an intuitive system will at least catch most people who speaks English.
Any romanization that is more than "close enough" is a waste of time though, when compared to simply learning to write in Thai.