I feel that 3.7 is still the best. With 4, it keeps writing hundreds upon hundreds of lines, it'll invoke search for everything, it starts refactoring random lines unrelated to my question, it'll often rewrite entire portions of its own output for no reason. I think they took the "We need to shit out code" thing the AIs are good at and cranked it to 11 for whatever reason, where 3.7 had a nice balance (although it still writes WAY too many comments that are utterly useless)