The top rated decaf coffees in this month's Coffee Review are Cafe Valverde's "decaf South American blend", Metropolis' "Decaf Redline" and Doma Coffee's "Jackie Oh Organic Decaf". I've bought and tasted the second (Redline) and the first (South American blend) is on it's way. Need to get on-line and get some of that "Jackie Oh" next!
Metropolis' Redline does hold up nicely to both espresso extraction and drip brewing. I agree with the flavor notes the Coffee Review guys shared -- sweetness comes in the form of caramel and dark chocolate, and there's an aromatic woodiness and fruitiness mixed in. What separates it from other decafs is the mouthfeel -- it's round not flat.