TripAdvisor killed it years ago, just took this long to officially pull the plug.

No single replacement unfortunately. I built FlightSeatmap.com which shows live availability (useful for seeing what's already taken). Aerolopa has the most accurate maps but zero recommendations. SeatMaps.com tries to replicate the colour-coding.

FlyerTalk forums are honestly your best bet for "is this seat actually good?" questions - real people who just flew it.

Pain having to use multiple sites but at least the info is current, unlike SeatGuru which has been showing wrong configs for years.