From a personal standpoint, I enjoyed TAR 12 after Lorena and Jason were eliminated. 14 was fun, but I have no desire to see almost half of them again. 15 was great until Cambodia's elimination (friggin' passports) but I got over it in Estonia. 16 was meh to me, though I really liked Steve and Allie and the Cowboys. The only reason more 16 would need to happen is if Season 19 was The Amazing Race: "Killer" Rivalries (i.e. Brandy/Carol vs. Brent/Caite, neither of whom peaked my interest) 17 had a lackluster season overall, but made up for it with the first F/F win. Hopefully, 18 will be great