Best bbbj category has to include deep throat as far as my appraisals go.
With one flukey exception, ALL of my best experiences have been outside Canada. That's not because we don't have the talent here, it's just that the combination of competition and affordability available in places like Thailand and Brasil (to mention two places I've been), is pretty well impossible to find here. In Thailand one of my favourite games was to have two girls do me at once and take turns going deep as they could. I had a special prize for whoever could finish me, but each girl was limited to a minute on each try. It got really fun because Thai girls love to laugh and they'd make a big show of trying to push their colleague off my dick if I looked like I was about to cum. I know it may sound mercenary, but I always made a light game out of it and most of the time would tip lavishly and equally at the end of the day.
The one exception here was a street walker I picked up on Queen St. West. She was a tall, big titted Honduran girl that has haunted my dreams ever since. The bbbj was incredible, which she gave me while crushing my dick between her massive naturals, but there was more to it. I've always been a one shot guy and in even in my youth (with rare exceptions) needed a half hour to recover between shots...but with her...I could not get enough and a street pick up for a quick blow wound up becoming a multi hour car session. We just hit it off and I continued to see her for the rest of the time she was in Canada, which unfortunately was only a few days.