Oh man, Sour D was amazing, one of the best sativas. Love the dense, tight nugs. Great for wake and bake, and gets you heavily medicated quickly. Like many good sativas, you can still walk around and do things, making it great daytime medication. It tastes like diesel, but not unpleasantly so, and when smoked, its extremely pungent, so be careful if your trying to be discreet.
Very relaxing smoke. Helps with panic attacks. Has great flavor down to the ash. Relaxing feeling is like a very mild body buzz, but no "high" feeling. Body buzz is both stimulating and relaxing, making it a good choice for any time of day or night. Very good medication if Thc makes you freak out.