Ready-to-move peace vs upcoming gamble in Noida?

Noida mein property search chal rahi hai, aur do options mein confuse hoon. Sunworld Vanalika (completed, around ₹2 Cr) ek taraf hai, ready-to-move hai toh possession ka tension nahi. Dusra Dasnac Westminster (upcoming, ₹7.5 Cr) hai. Price difference bohot hai, but iski rental potential kya hogi? Westminster builder ka track record kaisa hai, especially delays? Ready-to-move vs under-construction, kaunsa option better hai considering builder's past delivery?