Practically every album has a different lineup, but I find most of the band's total output enjoyable, and I've even got a few potentially controversial preferences of my own. ;-) All will be explained below! Remember, these are but my opinions, and you might not agree with them.
Despite having been a Yes fan for quite a while (as long as one can be when in their late 20s like myself), I still am not overly familiar with this one. Looking Around and Everyday are my top picks.
Time and a Word (1970)
Again, not as familiar with this one as most of their subsequent material. That said, Astral Traveller is a standout, and Time and a Word is also good.
The Yes Album (1971)