Buying my first Mohali home, need builder reality checks

Builder ka track record on delivery Mohali mein kaisa hai, especially for projects in Sectors 82-84? I work in real estate, but for my own place, I'm extra careful. Heard M3M's delivery in other cities can be slow, but what about their Mohali projects? Ya phir DLF ya Godrej Properties ka kya scene hai? I'm looking at a 3BHK, budget around ₹2 Cr. Brochure mein toh sab acha dikhta hai, but construction quality ka real feedback chahiye. Plaster cracks, seepage, finishing issues – yeh sab kitna common hai? Aur customer support after booking? Don't want them to go silent once the money's paid. Emaar aur Sobha ke projects ka kya experience raha hai logon ka post-possession?