Be aware that some stacked designs won't fit. Actually, all stacked ones when I did my research several years ago. The thin body doesn't give much room for extra height.
I have the VP-90 in the neck and the DLX-90 in the bridge. The VP gets a good single coil vibe, and the DLX is closer to a regular HB. They sound great together. It's a good set for versatility when plugging straight into an amp. Overall the guitar has a real in-your-face sound that always pushes the amp harder than my other guitars. For that reason, I don't play it a lot and I'm thinking of trying out a set of mini hums.