Warrior Board

 

In addition to the plethora of finger slots you'd expect, the Warrior also has wonderfully clever (and cleverly sadistic) thumb catches to engage all of your grip. It's also curved, so you can work a greater range of wrist and forearm muscles. And of course, there's the Warrior's smooth texture, which not only cuts down on cheese grater hands, but also prompts you to develop contact strength - a nice tool to have in your quiver on friction and thin face climbs.