Bioshock 1 was far and away the best. B2 was enjoyable for one playthrough, but had nowhere near the same level of intrigue and dread as the first game, which really deflated the experience for me. Infinite totally nailed the aesthetic they were going for... but the final few sections are a pretty unsatisfying slog gameplay-wise. The game tries to do some cool things here and there but doesn't expand upon them as much as they should've. It feels like 2K tried to get ambitious with Infinite and stumbled quite a bit, but it's still worth a go nonetheless. There are some pretty big revelations to the whole Bioshock lore that were good to witness.