Nuendo for both, using the additional encoders.
To my ears, the Nuendo DTS encoder actually sounds better than the SurCode one (we bought that a lot earlier).
Advantages are that both run right off the Nuendo timeline.
Metering is courtesy of the Pinguin Surround Meters with the LEQ(x) addon.
Incidentally - both will also accept a 24/48 source file too.
There are a lot of encoders out there that will not.