Bangalore investment: Confused between builder reputations

Sarjapur Road area mein property dekh raha hoon, mostly for investment. I'm based in Dubai, so site visits mushkil hain. Disha Dwellings ka Disha Park West aur Adarsh Developers ka Adarsh Greens Phase 1 shortlist kiya hai. Builders ka customer support after booking kaisa hai? Mera main concern resale value hai 5-7 saal mein. Kaunsa builder better ROI dega? Also, property manager kaise milega for rental? Power of attorney setup bhi samajhna hai. Any experiences?