The largest commercially available obitsu is 65cm. I know there's two people on this forum that have the body. It just doesn't get posted a lot. The photos below are company shots from obitsu.
Here's a set of 11cm obitsus with painted eyes. I'd show you more small obitsus, but I don't feel like digging up the photos. Someone else can do that.
Honestly. Obistus aren't for everyone. Vinyl is a material that isn't for everyone either. IF you are into photographing your doll *doing* things, and *expect* them to HOLD the pose... then you want vinyl. But, if all you want is something large and pretty, then get your resin doll.
There isn't any visual difference between well cared for resin or vinyl dolls. Out of the twelve large dolls in this photo, half are resin, half are vinyl. Good luck figuring out which is which.
I don't think you are a good fit for vinyl dolls. You keep saying that you want larger and larger... while to improve stability and structure, vinyls are going smaller.
Most vinyl dolls also arrive blank, there are some exceptions to this, but for the most part the doll will get to you without a face-up. It would be up to you to either give it a face-up, or commission an artist to paint it for you.
<3
-Kiki-chan78.