I've had independent pizza. Angelo's Pizza, where I grew up, makes the claim to have the "World's Largest Slice" of pizza. And it's friggen huge, and tasty. But certainly not the best pizza I've ever had. (They do have the best cheese-steaks ever, but that's a debate for another thread)
All I'm saying is that I infinitely prefer frozed pizza, because it's always fresh and much much much less greasy. It also tastes just as good, if not better, than any commercial pizza I have come across. And I have come across quite a few commercial pizza places. This is not to say that all frozen pizzas are good, but the ratio of frozen pizza goodness to commercial pizza goodness is quite high. Go on, go get a Dijorno. See if you don't like it.