I'd avoid Redoaks choc stout if possible. Its not bad by any stretch of the imagination, but has nothing on Youngs Double Choc...which is a brew to be reckoned with!
I went searching for chocolate stout the other week after having a redoak belgium choc stout at a local restaurant, ended up with a Youngs double choc and a Green Man and in my opinion they aren't anywhere as good as the redoak.
I love the mouthfeel of the redoak. I agree with PoMo that the youngs tastes like it has chocolate essence added - the head is that brown that it looks like food dye has been added as well
I'm taking a redoak belgium choc stout to the local HBS to get a clone HB kit made up next week - will see how it goes