Mattress Firm Purple Royale vs regular Rejuvenate — worth considering?

Has anyone directly compared the Mattress Firm-exclusive Purple Rejuvenate Royale models, especially the Crown or Monarch, with the regular RejuvenatePremier or Ultimate?
We tested the current RejuvenatePremier at a R&F and it felt like a rubber rock: firm, non-buoyant and not very conforming.

The Restore line felt a bit more conforming, but also less substantial, and its motion isolation seemed pretty poor.

We want something soft, plush and body-conforming with strong pressure relief, good cooling, easy movement and better motion isolation. Do the Royale models’ quilted tops, memory foam and latex genuinely improve the comfort and motion isolation, or do they still mostly feel like the standard Purple Grid?

Are the Mattress Firm versions worth the extra cost?