I am curious about knowing if certifications in testing would help in career advancement / wages / job profile etc. If so, which one is considered best.
'Knowledge is power, but too much of it can blow you up'
This has been asked and answered many many times.
The best certification is the one that is accepted by the clients in the region where you want to work. And that differs a lot. In my area, certification does very little for advancement or wages.