So which is "better"? I really don't think either one is better. Trout can be harder to catch and require more knowledge, skill, observation, and attention to detail. Bass, on the other hand, are just plain fun to catch. Especially smallmouth. They'll destroy a topwater lure/fly, crush baitfish patterns, and fight as hard as anything in freshwater (though neither has the endurance of a carp). Get a good one in the current, and it'll fight even better because of that big, broad body. Trout have more "reward" and bass have more "entertainment value".
To muddy things up, Bass can act like trout, selectively sipping mayflies and other dries. Trout, on the other hand can act like bass, annihilating baitfish immitations and mouse flies. ESPECIALLY the big browns.
So which one? Me, it depends on the mood I'm in. I love both. I'm not a good person to ask.
"It's just a job. Grass grows, birds fly, waves pound the sand. I beat people up."
-Muhammad Ali