English Teachers, which Masters is the best for career

All of the above are acceptable; however, an MA in Education with a TEFL focus is better. 

Others include: 

MA in TESOL / MA in TEFL
MA in Language Education
MA in Bilingual Education
MA in Adult Education with TEFL/TESL focus
MA in Curriculum and Instruction with TEFL focus
MA in Teaching (MAT) in Multidisciplinary Studies with TEFL focus

Some Saudi universities (presumedly government ones) will not accept an online/distance degree, even if it's from an accredited, Anglophone uni with a bricks-n-mortar campus. GO to the Saudi job discussion forum on Dave's ESL Cafe--there's been discussion on this topic.

And check out the international job board at Dave's, too,  to see what employers/recruiters are looking for (it is often mentioned that online degrees aren't accepted).