We tried T-Bone recently after a desperate search for something decent to eat in our neck of the woods and we really enjoyed it. It was not very busy for a Saturday night, but that's Phoenix during the summer for you. This is when we locals get to take back our resorts and restaurants from the conventioneers and snowbirds.
Other reviewers are right on the money regarding the mediocre at best sides, and the outstanding steaks. Mesquite grilled to perfection, my t-bone was fabulous, but my husband's New York strip was even better. The cowboy beans were also very good, with a nice zippy spice to them. The "salad bar" had an iceberg mix and a canned green bean and red onion salad. My baked potato was just fine and came with no shortage of butter and sour cream.
The biggest surprise of the evening was the beer- they have their own microbrewery. My husband ordered the stout which was delicious even though it was on the sweet side. I had the pale ale and it was great. Our server, who was awesome, told us that the amber was the best. We'll be trying that next time.
The whole atmosphere of T-Bone's is casual, friendly, and comfortable. We enjoyed the unique view of Phoenix lit up at night in front of us complete with silhouetted saguaros and South Mountain right behind us. I can see us becoming regulars here.