Our fourth Seabourn; this one to Australia-New Zealand. (Previously: Norway; then Mediterranean/Adriatic, then Antarctic (Wow), then this one, somewhat less overwhelming than the last.
New ship, the Encore, c. 600 passengers. Substantially larger than the previous class of ships (Odyssey/Sojourn/Quest) which in turn were bigger than the previous ones: Spirit et al.) Yes, there are more passengers and yes you know it when you're on board, yet they've done a nice job of enlarging the scale of the ship without much changing the ambience.
Best: Katy Schott (must be the best cocktail pianist at sea); the main Restaurant --4th level (remarkable to be able to serve all those people so graciously at the level of a great hotel dining room pretty much all at the same time -- while rarely anywhere near a market); stabilizers (smooth ride even when they were saying something about rough water); the various bars; the well appointed cabins and their closets, bathrooms, and terraces; the pleasant, apparently happy, rather well turned out and "mature" guests.
Worst Complimentary wine by the glass (mediocre when you're very lucky); public announcements (they didn't seem to know when one should be broadcast in public areas only and when they should have been piped into every room to be sure every passenger got the message); the Thomas Keller restaurant, which, in three tries, never got, I thought, quite beyond pretentious (cf. main restaurant, above); expensive wi-fi that sometimes worked.
Helps that it is new. Very pleasant and comfortable; decent entertainment center, nicely furnished and laid out bathroom; plenty of closet space; comfortable queen size bed. Laudable.