Fed up of renting, finally buying in Noida!

Sector 49 mein finally taking the plunge and buying something. Landlord raised rent again, enough is enough! I'm looking at two options, need your opinions. First, a ready-to-move 2BHK from Ratan Housing Development Ltd. EMI will be around 30k, but OC mila hua hai. Second, an under-construction 2BHK in the same area, slightly bigger, but possession mein time lagega. Pre-launch price hai, so cheaper EMI initially, maybe 25k. Honestly not sure if the lower EMI is worth the risk of delay. EMI vs rent math is killing me! What does the community think? Which would you pick?