Derek Trucks

I have seen Derek in a number of DVD's and finally decided to try some of his own cd's. I picked up Derek Trucks Band "Songlines", this cd is fantastic, I keep playing it over and over. Guitar, flute and vocals kick. Another great cd I purchased recently that is also great is Jason Isbell(formerly in Drive by Truckers) "Sirens of the Ditch".
It's hard to find cd's like these two that from the 1st listen, just grab you.
Any rec's for other titles from Derek or Jason that are must haves?
Jeff