Yes, really enjoyed it and recommend it highly.
Although not both at the same time we have been on the Summit, great ship and crew and been through the Panama Canal which is a wonderful experience. We both think that this is a cruise everyone should do as it is a classic (but we are not sure that we will do it again because there are so many others to do)....regards...Neil and Id.
We went on the Infinity this year to the Panama Canal, like the other writer, get on it, it's fantastic! Check out if the Summit's engine problems have been resolved. There is still a class action lawsuit going on about an engine problem that cut short two ports + other annoying problems on an Alaska Tour in May 2006.
Summit is a fantastic ship, crew, food facilities first class....as for the Panama Canal, can't wait to do it a FOURTH time.