Beyond the live stuff, there are a number of multichannel mixes of the albums themselves. You can youtube the various albums and see what you like song wise and then pick up the multichannel album for it because they're all good. I would highly recommend In Absentia and Deadwing as the most listenable, rock like albums. Their older stuff is still excellent, but different. The newer stuff is kind of mixed with the flavor of his solo stuff, but the mixes are always getting more impressive. Now that he has been releasing the Deluxe editions of all those albums though, the older DVD or BD/CD combos are hard to find and the Deluxe editions are great but also expensive.
In Absentia Deluxe The
DVD-A for it is still available and reasonable
Deadwing Deluxe The DVD-A is still available too, but is going for around the same price, so not worth it.
He went from dts to dts-HD and TrueHD and is now on to Atmos.