I prefer a tree stand anytime over a blind. I like to be high off the ground and be able to see long range and all around me. It also helps get the scent up and of the ground so that I cant be detected by deer or other animals.
Ground blinds are good because if you have a young and inexperienced hunter that has trouble sitting still and being quit for long periods of time then a ground blind is best, it provides scent cover as well as movement cover,
On a personal level I prefer a tree stand over a ground blind because I like to be invisible, and undetected in the woods when in hunting. Tree stands can come in different styles such as, a ladder stand, a permanent stand, and a climber stand. Ground blinds come in different sizes and shapes, and even homemade ones.