Really, TAR 6 would have been your favorite if that was the case? Wow, I didn't know that. It still is my favorite now, despite the winners. I just can't really sense anything wrong with it, apart from Freddy & Kendra getting closer and closer to the end. It had the best in terms of suspense, non-elimination placement, balanced cast, excellent locations based in Europe, Africa and Asia, and of course the task design. The challenges set in Season 6 were among the most difficult we've seen in the show's history.
So, TAR 6 is still my favorite, followed closely by TAR 3, and TAR 5 respectively. I agree with you amazing_race that Season 3 is indeed amazing, as it was so great in fact, that you can't help but watch it over and over - kind of like how I felt towards Season 6. The only downside to TAR 3 were the seven-straight elimination factor, but that problem was pretty much erased due to the surprise back-to-back NEL in Switzerland, AND the absence of a final 4 NEL. I also would have preferred it if leg 12 had of been set someone where else, rather than Vietnam again. Besides that, I can't really complain.
TAR 5 is still incredible, providing some of the best television in history. Sometimes I find it hard to decide which was better, that, or TAR 7. Both were amazing and I can see why the majority of TAR fans place these TWO seasons at the top, but I still preferred Seasons 3 and 6 over these two. Close competitors are TAR 9, and 15.
My FIVE least favorite seasons pretty much remain the same, and in order:
Season 8 (Family Edition)