I've grown his wonderberry. I liked it. Single cola about 3x stretch. ended up with 28" single colas. 6/10 female. easy to grow, no real nute issues. just needs more kick.
I've never grown any but they have been around for a long long time, definately not one of the fly-by-night seed co's that we see come and go...they must be decent to have stood the test of time.