I have two sticks an Easton Ultra-Lite with an Innovative Kovalev Blade and a Warrior AK-27 with a Warrior Drury Blade.
I've been using the Ultra-Lite lately because the AK-27 I have is one of the grip type and I don't like how I can't move my hand as freely as with the Easton (which is more smooth). In terms of the blade, I love my Kovalev blade. At first I didn't like it at all, but then one game I switched sticks and it just stuck. The blade is chipped up after using it for a few seasons, but it's still going strong.
I'm not sure of how good it is in terms of duribility other than normal play along the boards and the occasional slash to the shaft/blade. I don't take slapshots that much (I prefer taking wristers), so I have less of a chance of breaking it. However, wear and tear through normal play is good for it.
Great sticks/blades, I highly recommend.