Bangalore investors: How do you negotiate payment plans?

Hoodi — I'm seriously looking at a 2BHK here, fed up of renting yaar. Keya Homes has a project near Venkateshpura. My EMI vs rent math finally makes sense. Builders are pushing construction-linked payment plans. Is it actually smarter than a bigger down payment for investors? Also, how do you even get a spot discount? Or is it always a no-price-drop policy in Bangalore? Looking for real experiences, especially around Hoodi.