I enjoy both. For us the cruises are about mainly relaxing and really superficially seeing the places we visit. We really enjoy Tauck for the ability to really see and enjoy the culture of the places we visit. I have considered
DCL Mediterranean, as we did the Baltic, but I think we would be better served by a land tour of Italy, which we would do anyway, and see the same things (and much more) than we could on the cruise.