The Chop House. Excellent quality steak (filet), very good lobster bisque. Have eaten there twice. Once at the bar, once at a table. Great service both times. As a bonus, they serve Zingerman's bread!
Westend Grille. Couldn't find a link, but this one is more casual, a star or so less than Chop House. Not as expensive but it was still a very good meal. It's downtown AA, a block or two off of the main downtown strip.