Finding a good Bubbler

Any of the artisan heady glass should have good function.

Chinese made glass, especially off brand stuff is a mixed bag.

I have a simple 8 arm "octobong" bubbler from Black Leaf, which works perfectly fine. It's more of a chubbler than a bubbler, but it essentially works the same way.

If you want heady glass, just go for whatever looks nicest to you.
Though in my own experience I prefer to hold the pipe in my left hand, so the carb hole needs to be in a practical location for that. For me that is usually on the right side of the pipe.
My chubbler doesn't have a carb hole, as it takes a regular SG19 bowl. So I lift the bowl instead.