Confused: Broker or direct builder for Noida Ext deals?

Visited Greenarc Homes in Sector 22 Yamuna Expressway, builder rep se baat hui. Fed up of renting, finally taking the plunge. But I'm wondering, brokers claim they get better spot discounts for investors... is this true ya builder direct deal zyada sahi deta hai? Total cost mein kahan difference aata hai? Seeking advice.