Honestly, I pretty much love em in all shapes and sizes. It just depends on exactly what I'm in the mood for. Japanese RPGs, for the most part, don't so much appeal to me, but that's more down to the the way they're written than the actual game mechanics.
In terms of open world, turn based, strategy, mmo, etc...it all comes down to execution for me. If you get it right, I can love all these just about equally. What's really most important for me is that there be great writing, great build diversity, and great player agency.