San Francisco, California
My 3rd time on this tour. Usually superb but not so great on a busy Sunday during peak summer break. We only did 3 wineries and one of them was pretty mediocre. Just to be clear, this is an excellent tour - it was just a bad time to take it. Avoid Roman as your guide, though. He's quite annoying. The other tour guides are fantastic.
Edinburgh, United Kingdom
An excellent, albeit long, tour. A gorgeous day in the highlands including a lovely ride on Loch Ness. My tour company used a Mercedes 16 seater which was much better than the bigger tour buses. Excellent tour guide as well.