Outback is still king of the chain steakhouses, IMO. We won't eat at any of the other chains, despite having tried them all. They just don't measure up. On the rare occasion we do enjoy Outback, we use the drive-in feature and eat at home. It saves on the beverage charge.
We sometimes use the "Carside To-Go" or similar at one or two of the chain restaurants - Applebee's, Ninety-Nine's.
Honestly, I have trouble thinking of Outback or most of them as a steakhouse. Most of the major national or regional chains have the "Generica" menu with some nominal element of identity/environment flavor or specialty ("Mexican", "Australian", Canadian wilderness, pizza, sea food, "Italian", what-have-you...). They all feature some steaks, but...
Longhorn? More of a steakhouse than the rest, I suppose. I've eaten there and they're pretty good, but for some reason they never leave me with any particular motivation to anticipate coming again.
For me, the chains have to a certain extent played out, and some of them we just don't go to anymore.
We're fortunate that we have some really good steak houses around, not really of the chain variety (not the mass-market Generica variety, anyway). Also, we have a variety of types of places, and some good or excellent independent restaurants.