Hi Gretchen, Yes, I think it was worth it. I went on the BOE tour after going on a number of Rick Steve tours, three Contiki tours and stayed with friends in England and Holland. I wanted to see more of the same cities I had been to as there is so much to see and I used my free time to see sites, places and churches I had not seen. I also had not been to the part of Switzerland the tour takes you or to Beaune and it had been years since I had been to Munich. I never stayed in Venice proper but loved Venice, so that was a treat and got to see the inside the Doge's Palace.
I loved this tour, it was an adventure. But what really made it worth while was knowing exactly what I wanted to see in my free time since I had already been to most places on the tour. I used my time wisely to make sure I got the most out of the free time and see the museums and sites I still wanted to see but had not been able to as you always run out of time! I even managed to go to a wonderful restaurant in Rome I had been to before and enjoyed for the second time and found a wonderful restaurant in Paris I had not been to before. Now that I have been on a number of tours and really felt I could get around Rome ( went on the week long tour twice), I even stayed an extra day in Rome by myself and was able to see a number of things, churches and other sites which I would not have been able to see if I did not go on this tour.
You will love the tour as long as you know you will be seeing some of the same things and then be able to see things you haven't see yet.
I am going on my 16th tour this year and going on the 8 day Munich, Salzburg, Vienna tour which as you well know is part of what the GAS tour goes to. I loved the GAS tour so much, I really want to see Munich, Salzburg, Vienna again!
Next year I hope to go to some place totally different that I have not been to. But this year, back to London and on the 8 day tour which will be wonderful to revisit all those cities.
Have a great time, no matter which tour you pick.