We were on the Silversea Cloud to Antarctica and it was a trip of a lifetime. It was our first time on Silversea and a first class experience all the way. A trip to Antarctica requires lots of flexibility in scheduling and Silversea has that down to a science. They went out of their way to make sure we experienced all we could - we saw all kinds of seals, thousands of penguins, and several whales. Our weather was perfect and our pictures are extraordinary. We highly, highly recommend a trip to Antarctica, but make sure it is on a small enough ship to allow for shore expeditions.