Ctav brought this thread of glomarrone's back up but I can't find his post. This is basically the same subject as the more recent one here, "Why bother having formal nights if no enforcement?", since glomarrone's was started two years ago it is interesting to note opinions haven't changed a lot, including my own.
However, looking back two years, it appeared almost for positive Princess was going to go the Celebrity route and dilute the formal nights to the point they are almost non-existent. So then we started looking hard for another line who catered to those who like formal. As already noted, that was difficult, since as far as I can determine about 70% of today's cruiser prefer to not have to dress up. We were down to only two lines, Princess and Regent and even Regent had altered their program so it was dress pretty much as you want. Regent was a little different though, with many venues and no additional charges where you could easily get a table for two in a non-cramped setting, which makes it pretty easy to dress and not be concerned with what others are doing. Unfortunately a cruise on Regent is $$$.
So we decided Cunard was one of the few left. After pouring through their itineraries for some time and not finding anything we really liked, we were in a quandary over what to do, I think the no perks and having to start all over again had the most to do with it but we simply couldn't get enamored with their product. Fortunately, over the last two years, Princess still has not went the no-dress up route. So we remain happy with them.