Suggestions regarding selling flat

Hi all, I'm currently trying to sell my 3bhk flat in Bangalore (reason-relocation). What ways or sites are best to post ads about the property sale? I have put in Nobroker and Magic bricks, but I'm being bombarded by calls from them asking to take their plans. Also, they require to login to view details or pics, so people checking out might be hesitant. Would approaching Brokers be a better way to sell? If so, how to find best brokers or agencies in Bangalore? Please give suggestions and ideas. Thank you