If I had to rate the seasons:
#1: TAR 14: Loved the cast, and it was the first time I didn't mind the winners, but could've built a better route
#2: TAR 12: Again, another great casting, phenomenal route, but I didn't like the winners all too much...
#3: TAR 3: Another great casting with awesome route, but I HATED the winning team. Flo = </3
#4: TAR 1: Probably the best route to date, you can't really duplicate a route like that now, unless you literally duplicate it (please don't...), and even though the teams seemed a little boring at times, it was a phenomenal start to an amazing series.
#5: TAR 2: Another great race route, with some pretty good teams, and the final run to the mat was epic
#6: TAR 5: Absolutely stellar route in terms of the amount of travel that took place, but my least favorite team that season ended up winning...

#7: TAR 10: Route was awesome, casting was amazing, but got bored after Madagascar, when the last of the good cast went out the door
#8: TAR 7: Hated this route the most (to me, it doesn't count as a real "race around the world" if they didn't actually go around it...), but a good team won, and it was semi-entertaining throughout...
#9: TAR 4: Boring cast, horrible winners, and the route seemed like it was trying to hard to be a "good mix" of the first 3 seasons' routes
#10: TAR 13: Loved the route, unfortunately it was completely ruined by potentially one of the worst casts ever to "grace" the amazing race stage, on top of that, there was almost absolutely no competition, at all
#11: TAR 11: If it wasn't for the 20-something legs in South America, I would classify it as a good route. But, again, another boring cast, plus I have a personal hate for this season because one of my all time favorite teams was eliminated first </33333
#12: TAR 6: Good route overall, but literally every boring team made it far, and the teams that had potential to be entertaining were out within the first three legs. The fact that Johnathan/Victoria were on this season doesn't help it's case much either
#13: TAR 9: The route was alright, but it felt like there was a little too much jumping back and forth. This was also the epitome of the alpha male teams totally dominating a season (kind of like season 15 now...).
#14: TAR 8: I absolutely HATE this season with the white hot intensity of a thousand suns!!! Casting families </3333, nearly all U.S.A. race route </3333, totally ignoring the West Coast </3333, reminding me of family road trips </3333. Horrible, horrible season in my opinion. Never do it again, ever!