I've eaten at quite a few Yogis Grills since they started opening up in Arizona a handful of years ago. Their teriyaki chicken is pretty good and you get quite a bit for your dollar. 
However!!! Two things. 1. No matter which location I go to the service always seems sub-par. It seems everyone that works at Yogis Grill just seems uninterested and lacks the ability to be friendly. *shrug* Its not overly bothersome to me but it would be nice to have friendlier service. 2. Their sushi, is not that good and they are ridiculously over priced. I can go to Kona Grill which is a nice restaurant and get much better tasting sushi for nearly $2.00 cheaper! I just can't get past how expensive their rolls are AND it doesn't taste much better then grocery store sushi. 

I'll still go there for teriyaki but not for sushi, its just not worth it.