Back Alley is the only the second CrossFit gym I've been part of, so I don't have much to compare it to. That being said, it is by far my favorite. The coaches are great - super knowledgeable, great at teaching, very welcoming. The members are awesome, too. No pretentious people to make beginners feel uncomfortable. The owners take great pride in the gym, so the equipment is well maintained and clean (including the floors and bathrooms!). They do several events each year to raise money for different charities. On top of being successful and helping great causes, the events are lots of fun. There is a kids area in the back of the gym with enough stuff to keep any kid busy for an hour while you work out.
Whether you're looking for a new gym, or just in town looking for a place to drop in, look no further! Back Alley is top notch. Come say hi!