How is the worklife balance in KPMG GDS, is it better than PwC GDS ?

In Big 4, I’ve noticed that there is one global delivery Center (for example EY GDS or KPMG Global Services - KGS) and one India business unit (for example) EY India or KPMG India.

Which one is actually better in terms of a career and ...

I’m currently working at KGS and have an offer from PWC AC in audit domain. Should I make this switch? Which firm is better in terms of work life balance and quality of work. Also which for is better in terms of culture.