TK at IST is my favourite. I can accept no spirits as those are not my thing anyway (and the prosecco is quite good) but the food is heavenly, especially their recipe "of the month" that was always manti whenever I visited, and I love the tea room. It's the only lounge I ever stole from - while I always take the Turkish tea while I'm there, they're regular teas are also awesome and I tend to bring a few packs back home. It can get rough when it's busy indeed, but most of the time it's fine.

But then, I'm only in IST few times per year, whereas my trips within Europe are much more frequent and then the CDG lounge becomes a major upgrade compared to the LHG nonsense at FRA/MUC. ZRH lounge is missed, but it's only worth it if my layover is long enough to warrant a trip to the E sector, the ones in European sector are a pure hell.