Brisket has become a never ending endeavor that sometimes ends in glorious victory and other times in complete frustration.  I have tried several different variations to varying levels of success.   I will go with my last variation and wish you good luck.  Just remember when your making brisket you cant be rushed, at minimum you will have your grill going for at least 6 hours and more likely closer to 8.  Whenever I am in the grocery store I always end up at the butcher section, if I see a brisket on sale or if it just looks good I will always grab it just so I have brisket around, because it is always good to be prepared and have brisket on hand.  I will usually get a brisket around 2 pounds, this is usually good to feed around four adults and have some left over.  I do like to have some fat left on the meat so I will look for pieces of brisket that have a little more fat on them and will usually cook that side down.