Arlene, we really enjoyed the tour. It covered so much of the country and we saw so much. Our guide, Helen, was wonderful and so were the local guides. Even though I don't have another tour, or even another tour company, to compare it to, I can't imagine that it could have been much better. Have you had a chance to read the reviews of the tour (they are listed under each individual tour). I think you will see that they are overwhelmingly positive. Feel free to send me a private message if you have other questions. If the tour covers the parts of Spain you are interested in, I don't think you can go wrong.
Agnes, we decided on a tour for a few reasons: Spain is a big country and we hadn't traveled there before, so it did seem somewhat overwhelming to try to plan everything. We've also found in traveling independently that we sometimes waste time getting lost, waiting in lines, etc., and we wanted to avoid that. And we are getting older, so there was the appeal of turning over the logistics to someone else. On the downside, I enjoy the planning, and researching hotels and restaurants, but I got to do some of that for the days we spent in Spain before and after the tour. Let me know if you have any other questions.