I can't compare because it is all I have grown as far as ECSD lines go but Rez's sour diesel ibl has been really nice so far. Some of the best pot I have ever smoked and one of the best packs of seeds I have ever grown has been my last and current pack of the SD IBL. I've grown a couple of packs all with 0 hermies, fantastic look, healthy yields, intense smells, and keepers in every pack. I currently have 3 females that will probably never leave my garden. It has the most intense diesel/fuel skunk smell I have ever encountered.
If there are any of these left I would buy pack especially knowing he actually had the real deal ECSD to do his work with.
day 40 flowering
Big, greasy, and rank buds. This is the strongest smelling herb I have grown. The fuel smell is just rank burn your nostrils with a powerful skunk kick that is like no other with sour notes for this pheno. This one to me in real life looks exactly like ECSD. From the leaves to the way the buds stack and intensity of the smell. I really can't see how anything can have a more obnoxious smell. I love it.
Growing the last pack out now can check that grow out here if you wish: