I really, really like Haruhi, but comparing it to Azumanga Daioh makes no sense. The animation is FAR superior, the art far more detailed with more typical but very well-realized character designs, but the humor is more, I don't know, "scripted" than AzuDai and also has a rather serious overarching, if a bit undefined, plotline. If you took my opinion as gospel, you'd put Haruhi very close to the top of your to-see list.
Eiken...despite my great appreciation for fanservice, even I stayed clear from this one, having heard of the plethora of offensively-sized bazooms. If you want torpedo tits with an actual if difficult to figure out storyline, watch Divergence Eve/Misaki Chronicles.