Quasar draws adventurous types aged mainly between 35 and 65, mostly from English-speaking countries, although you could encounter a passenger or two from the Netherlands, Hong Kong, Brazil and Russia as well. The line's fleet is family-friendly, with special activities laid out for kids like stargazing and journal-keeping.

No. Comfortable expedition gear is most important and a detailed kit list is suggested, including, among other things, long sleeves, neutral colors, shoes suitable for wet landings from Zodiacs and rash vests for snorkeling. In the evenings, the dress code remains casual, although everybody certainly changes for dinner.

No. All activities are included, except scuba diving which carries an additional cost. You'll also need to budget extra for airfare from the mainland, park fees, gratuities and bar drinks.

The Galapagos is all about what happens off the ship, and snorkeling, guided hikes, Zodiac safaris and kayaking are all popular. All of these take place in small groups, with all activities accompanied by the ship's guides. Onboard, life centers around the bar, lounge or hot tub, and expedition leaders give well-attended talks about the islands and their wildlife, as well as detailed briefings for the following day's activities.

Best for: Well-heeled adventurous who also want luxurious surroundings and attentive service

Not for: Budget travelers or anyone looking for lots of ship-based activities