Kata was a great tour guide, friendly, sociable, full of knowledge and very well prepared with historical information! My only advice is to shorten the tour. It was scheduled for 2 hours, 45 minutes, but took 3 hours, 30 minutes. It should be 2 hours maximum, and Kata should shorten her explanations so that we are not listening to such long history lessons. This should not be a history class, it's a quick overview of the Buda side, so there should be more walking, less talking :)
Zsannet was an excellent guide. It was literally our first hour in Budapest, we had just arrived, so it was the perfect way to start our orientation to the main tourist district and understand the layout of the city. Zsannet was fast paced, funny, shared the historical information in good amounts (not overloading us with facts and dates!), and gave us time to take out photographs along the way. She also gave us good recommendations of places to eat at and visit!
Christina gave us a fantastic tour of Vienna. She was funny, knowledgeable, able to answer all questions fully, and was very friendly. It was one of the best walking tours I've been on!