Not a lot wrong with G nocks I use them myself
You'll want Hunter Beiters with the symetric groove rather then the normal asymmetric one - using a D loop the string where the arrow nocks is vertical at full draw, on a finger shooter the string slopes at the nock point at full draw and the asymetric groove is designed to sit balanced and therefore leave the string with less interference.
I've shot both and in the one group so have not noticed much difference in performance. OMMV
If you want to survey Beiter stuff they have a website
Werner Beiter | Dauchingen | Germany | Products | Nock