I have both, but with significantly different layouts. I think there are a lot of similarities in the two balls. They both can have a hook stop look, but on the right conditions they really face up solid. Because of the layout my IQ is a little stronger from deeper angles.
Just a general impression, but the V Max may match up a little better for high rev, or rev dominant players. The IQ solid is super popular with top senior players who are lower rev guys.