I've been pondering the two Yeasayer albums and I like them, but that isn't a guarantee you will.
They have so many inflections that flash me onto other bands that I can't decide if it's derivative or if they've plaigerized enough sources to be original.
They are good in that late night sort of spacey way. Not as soporific as Mazzy Star or Hope Sandoval's solo discs, but not quite as lively as XX, either.
There's lots of Joe Jackson (Night and Day era) licks hidden in there, some Pinkish Floyd, and so many familiar things happening at once that I can't put my finger on it all at any one moment.
(Parts of could almost be from a Ronnie Lane album.)
So, I give them a provisional thumbs up and would add: This is the kind of music that grows on your after the first four or five plays.