Texas brisket is the finest food on the planet!! I cook mine super slow for two days. It comes out so juicy and tender that it literally falls to pieces. My fave part of the brisket are the coveted burnt ends. The best BBQ besides my own (which I admit theirs is better!!) I've ever had is Bodacious in Arlington,Tx. They cook theirs for two days as well.
I think the problem with most BBQ restraunts is they either cook it too fast or put too much unneeded seasonings on it,and it either comes out tough and dry,or all you taste is the powder seasoning garbage they covered it with. All you need is smoke,and maybe salt and pepper.