The real math behind 2BHK vs 3BHK in Bangalore

2BHKs in Sarjapur Road seem like the better rental bet, especially near the Peripheral Ring Road. Yaar, I'm so fed up of renting, landlord ne phir rent badha diya. Finally, soch raha hu apna ghar le lu. My budget is around ₹90L-₹1.2Cr. Dekh raha hu Whitefield aur Electronic City bhi, but traffic ka darr hai. Log bolte hain 3BHK ka resale better hota hai, but rental yield ke liye 2BHK sahi hai na? Koi experience share karo, especially from Prestige Group ya Godrej Properties projects. Should I wait for Metro Phase 3 to complete?