I'll have to chime in and cast my vote for G's environments overall. I believe that H's direction shares some of the very same problems the core game has...and even more so in some cases. It's not easy putting 8,000 elements together and try to make them work; this is just my little old opinion anyway, but the direction G is going in seems immediately recognizable at a glance without question as to what we are looking at on the screen.
I would rather see something semi-realistic that simply looks solid and believable as opposed to something artsy and abstract. I'm not real big on abstracts in any form, so I can see more than just a face lift happening with G's set (so far). It's also kind of soon to judge and perhaps both elements might work together somehow, too. But those are my two coins...