Having eaten at both Rover's and Lampreia, I have to say that the latter wins, hands down. Rover's may have a nicer location, but the food was not as good as at Lampreia, and it was nearly twice the price!
I've heard people go on and on about Rover's, and while it was very good, it was not worth the ENORMOUS premium. On the night I was there, I ordered the eight-course tasting menu. The entree dish, venison, was merely a nice piece of meat, and the earlier foie gras course was just some nice foie gras. That was my impression of the whole experience, actually. Rover's presents very high-quality food, but for the most part, I thought that what they did with it was either not very creative or not very successful.
So all you Seattle Chowhounds out there, how about sharing your favorite restaurants that DON'T require you to shell out a couple hundred dollars a person?