I have used both, but I prefer PVC, at less than half the cost, and once glued or screwed together, very solid. And if you place unions at the proper junctions, and proper distances, the maintenance of brushing out pipes is easy. Appropriate sized valves are readily accessible and also inexpensive at most hardware stores that fit, and the pipes can be reduced with availble pieces to standard sizes.
And because of the easy availability, when things get old and crusty, you can hack it off and replace and glue it on in moments with something available down the street at minimal cost.
I agree that PVC is not as nice to look at, but it can easily be hidden, and because it is rigid will stand where it placed.
I don't like the need for hose clamps on vinyl that rust, or worse too easily come loose.