A new generation of plastic balls made with ABS plastic seem to be a noticeable improvement over the initial plastic balls (poly). For a more official review check out:
I’ve been experimenting with the Andro version which has also been getting decent reviews. So far, I feel it is definitely closer to the feel of the celluloid ball than the poly balls. Need to give it a few more weeks of play to be sure. If you’d like to try it out, post a comment below and I’ll bring one into the club.