shoddy new construction resale condos

any statistics on how shoddy construction affects the long term health of a condo? from what i'm being told, a huge number of new developments built in the past 5+ years have had to have repairs/major construction done by the developer for leaks, warped floorboards, etc. if one was to buy into a resale at one of these places (assuming major repairs had been done, and the building is now a few years old), how confident should one be that these kinds of issues won't recur? has it actually become an exception to the norm when a new building is built, sold, and has NO major issues? anyone have horror stories to share about buying into a new construction or a resale "new" condo? mold, leaks, sewage?