Which battle tiers do you love to play and which you hate and why?

Ectar: I enjoy tier 9 the most as you can easily hurt the tier 10, there is no tier 11 and you can happily deal with any other tier 9 and tier 8.   I used to like tier 6 as it was the first tier where different roles/vehicle type was noticeable and there was a big variety of tanks.  My favourite tanks from then are just not the same (VK3601 when it was a medium with the 88, Hellcat and Jumbo Sherman).    Tier 8 for me is one I usually free exp past. I don't really have a favourite tank at that tier.