Bangalore builders: quality and hidden costs dilemma

Bangalore mein construction quality ka scene bahut unpredictable lagta hai. I'm based in Dubai, so site visits mushkil hai. Prestige Group ya Sobha Ltd. ke Whitefield projects ki real quality kya hai? Finishing aur post-possession issues mein kaun better hai? Aur hidden charges ka bhi darr hai, especially for Puravankara. Any advice?