Season 27 is in the bottom five for me, hate to say it but it is extremely sloppy. Even TAR26 with the blind couples was more exciting and imaginative than this bore.
My bottom five seasons in order of release:
8, 13, 16, 24 and 27
Dishonourable Mention: 10 and 11
My top five seasons in order of release:
3, 5, 6, 18, 22
Honourable Mention: 7 and 12