i've been to big al's ( is it big al's or hungry al's ? ) and canyon city bbq - i like both, but i'm a bigger fan of canyon city...big al's..you gotta get their at the right time, otherwise....the meat is too dry.
I really like Canyon City BBQ in Azusa. It is down the street from where I work. My favorites are the brisket and pulled pork. The Tri Tip is smoked so not rare, I prefer my Tri Tip rare. Also they have a good Philly Cheese steak! http://rants.raves.reviews.blogspot.com