I've used products in the original 3e format (City of the Spider Queen), the Paizo-era Dungeon format, the delve format (Eyes of the Lich Queen), and whatever the delve-derived new format is (Keep on the Shadowfell).
The current format used in KotS is, by far, the easiest, most DM-friendly of the bunch. I cannot thank WotC enough.
In contrast, the "paragraph of stats, everybody at the back of the module" format from CotSQ was, IMO, completely unusable. I dance a jig upon its grave.