Deck versus patio?

We have an old 2 level patio done with pavers. It was a poorly done DIY job done by previous owners. We are debating either putting a deck over the whole works above the level of the higher patio, or excavating the higher patio and putting in a stamped concrete patio at the level of the lower patio. If we could leave the existing landscaping alone and build the deck over the top I think it would be the cheaper option. Any advice for what would be most economical would be greatly appreciated!