I ate at the TS in January and LOVED it! My sister and I had reservations right before the park closed, so the restaurant was pretty quiet and empty, we had seats at the window so we could watch the parade go by. The food was wonderful, we added an appetizer and some drinks OOP and had one of the best meals of our trip.
I tried the QS this weekend with my 9 year old niece, I honestly didn't even realize it was Yak & Yeti until I got the food. LOL I only stopped there because they had chicken and fries and that's all she'll eat. The meal I got was good, I enjoyed it, but it was kind of cumbersome eating out of a take out container. I would take the TS over the QS any day of the week!