In terms of current urethane offerings, the two you mentioned pretty much bookend the hook spectrum. My best guess as to what would be in the middle would be the Grenade or the new Blue Hammer. My personal favorite is the Grenade, but the Blue Hammer is a little more versatile in that it works good polished as well as sanded.
As to question 1, your carry will suffer using urethane from inside angles, that's when a weaker resin ball might be necessary, even on a dry house shot.
Hope this helps you.
Edited by Cobalt Bomb on 12/24/2011 at 7:47 PM