Completed projects are always better than under construction, right?

I work in real estate but buying for myself in Noida is a headache. I'm looking at Antriksh India Grand View and Nitya Azaad Residency. Grand View is pricey, 2-5 Cr, but OC toh mil gaya hai na? Azaad Residency is way cheaper, but carpet area kitna hoga? I know builders don't tell you everything. Has anyone lived in either? Which one has better maintenance charges? I'm thinking resale value bhi Grand View ka zyada hoga, sahi hai kya? Should I even bother with under-construction projects anymore? Is the peace of mind worth the extra cost? Honestly not sure which way to go. Kya kisi ko pata hai which has better parking situation?