Vortex I, was a pearl reactive good for med-light, ball didn't sell that great thats why it was ditched. V2 is a good med ball. Depending on drill pattern and surface will handle lights to pretty heavy. Very versatile piece. Considered one of the best control tourney balls ever. I like the V2 more for heavy mediums personally. Vortex I kind of reacts like a V2 clean with a little less POP on the backend. Good luck, both a good choice depending on the conditions you see.
