The Trick cover is great, so the Exist should be pretty good, probably more a shape difference than a hook difference.
Show Off won't belong in the HP2 line as far as hook goes, but this might be a price point thing rather than a hook thing. This is a super bang for your buck ball, it's going to cover all but soup for much cheaper.
Urethane doesn't interest me, but the Hot Cell should theoretically be very good for heavier flatter patterns. Tons of flare for traction but the urethane cover shape. Interesting, but urethane and I will never be friends.
Hustle Ink, I'll have to see it to believe it. The current covers at box are already too weak for that core, with an even weaker cover? Not seeing it. Those things roll heavy but don't rev, just don't like anything about the Hustle ball reaction.