We tried out Red Robin last night. The mushroom burger was great. The fries are so-so, but the basket is "bottomless" - as in, free refills. Needless to say, it would easy to gain ten pounds pretty quickly just by eating there once in awhile! All in all, a good experience.
So far, in my opinion: Red Robins > BJ's > Fish City Grill, in terms of food.