BlackRock vs BCN: Which offers better long-term career optionality?

I have ~1.5 years of experience in telecom consulting and currently hold two offers: Analyst at BlackRock (₹12 LPA fixed + ₹2.5 LPA variable) and Associate at BCN (₹16.5 LPA fixed + ₹1.5 LPA variable).

From a long-term (3–5 year) perspective, which role would provide stronger exposure, faster skill development, and better career optionality (across consulting, strategy, or industry roles)?

Looking for insights from folks who’ve worked with or transitioned from these firms.