Hey Sarthak
I think so as far as firm brands are concerned both enjoyed respectful place in industry. So important question which u should ask to yourself is which field excites you more?
Some tips to help u in decision
like do you want to start ur own practice after becoming CA then tax field is comparatively better but if corporate world attracts u more then audit is comparatively better field.
In which field you are doing good in CA exams
Are u planning to move out of country and earn money then audit can provide better platform.
So dont worry about firm brand but think about professional field. ... Good luck