[NTG-context] Q about mathml || tex-native?

Hi, i plan to write a math-booklet and have a question about the math-modules in contex. What is the preferd way to deal with math in contex? MathML (xml-way) or \*formula (tex-way, from my point of view) I'am plan the outputs to pdfs. There are some complex (integrals, complex numbers, ...), formulas and electionical circuits figures. I'am not sure what is the 'best' way ;-) Please can you tell me your thoughts and opinions ;-) Thanks && regards Alex