Just got possession, some things genuinely surprised me

Under-construction projects in Bengaluru, especially the new launches, often hide some nasty surprises. Just got possession of my flat in a New Launch Project area last month. Honestly, things nobody told me about before buying are now hitting hard. Builder ka track record on paper was sahi, but ground reality thodi alag hai. Now I'm thinking, next time, should I stick to ready-to-move-in flats, even if pricier, to avoid quality issues? Or rely heavily on broker assurances and initial site visits, hoping for better luck? Ya phir, go for established builders only, even if their new launches are premium-priced, trusting their delivery? Which approach makes more sense to avoid these hidden costs and frustrations? Kya bolte ho?