I kinda agree on all counts with you Air, except some, but I'm feeling like typing a LOT so here goes
TAR18: It was an eh premiere, but the sharks and sailing task looked pretty in HD and the decoding task caused Cowboys to struggle so props to that.
TAR 19: I really really liked it. Even though the tasks were simple, it was a very simple and fun premiere. The billboards were a tricky and well done mental clue, the dragon boats were linear but it was good too as a task, and the telephone was mildly entertaining. The Hazard though was basically a way to show teams in the ads like "THE AMAZING RACE! *cue team screaming and doing something extreme*. Still a great leg though.
TAR 20: The leg design was eh, but the meltdowns were pretty fun.
TAR 21: I fell asleep. Not kidding. And I wasn't even excited for the premiere, the only thing I genuinely remember about this leg was "I liked Abbie & Ryan and Chips and Twinnies. Bye."
TAR 22: The mass quit was slightly notable, but otherwise it was eh.
TAR 23: Another heights task, eh. The rowing was boring as hell too. Possibly the worst leg ever.
TAR 24: Luck, Luck, then Luck. Legitimately horrible.