My Kala Bari never sounded great in G, there being a nasty wolf tone on the open D. I almost always kept it in A. Then I got my Nui, which sounds amazing in G, at around the same time I started playing Renn guitar repertoire, which is Bari scale tuned in C, and found Jazzy Ukulele, who ALSO uses a Bari tuned to C.
One of the cool things about the Bari is you’ve a great deal of flexibility in its tuning. One simple one you can use with “normal” strings is open G, dgbd’ which is a basic banjo tuning, lends itself to slide, and some slack key tricks.