Yes, I've used HDRI lights in the past and they are really easy to use.
But somehow I'm not satisfied.
Please let's take an example. The first promo-pic here, I'm more than sure that this one has been made in this Studio thingy. I really like this light! Which settings would be necessary to achieve this light in Carrara? Is that a HDRI-map?
I'm not working with Studio, so I don't have a clue how that scene has been setup.