This has the more classic Pittsburgh view than the Monongahela Incline, also has lots of pictures and memorabilia of Pittsburgh and how it's changed inside the building. For a small fee, you can see the inner workings of the machinery - this process of paying the additional amount feels like that of a sideshow at a carnival.
Which inclines view I prefer is hard to decide - Pittsburgh is beautiful from many standpoints. I might even prefer the views from the streets. This experience, however, is worth its price of a bus ride.
It's a tourist attraction, the kind I bet most Pittsburghers haven't enjoyed. I'd check it out though, at least once.