Need genuine advice on switching

Context: almost 5 YOE, BTech + MBA both from tier 3. Current CTC 32LPA including variable and retention bonus (24.3 is fixed). I work as an APM in a pharma consulting organisation (which also has a SaaS platform) in Pune.

Recently Got an offer from a tier 1 consulting company (not MBB but close enough) for a pretty new role of product + project management for one of their saas tools. The offer is 20% hike on my fixed + variable upto 15% + 2L JB. And it’s in Mumbai which is my hometown. I tried negotiating but the hiring manager said this is the best offer they can give.

The job role will require infrequent travel to client locations and overall seems interesting.

I’m in a dilemma if I should accept or not because the brand is infinitely better than my current organisation and will open up exit opportunities to MBB. On the other hand my professional growth in current organisation seems stagnant as there is not a lot to learn here but monetary growth has been good. (10-15% hikes every year).