I thought Salbute' was pretty unimpressive when I had lunch their a few months ago. Below average food, and the service was not very good either. Prices were also high.
With the above said Salbutes shortcomings were magnified by a recent visit to Frontera, and a visit a few weeks later to Amanacer Tapatio, both of which were head and shoulders above Salbute.
Adios Salbute