I trained at a couple of Manhattan Crunches and I'll tell you it's all about the location; each had different equipment, layouts, vibes and clientele.
Actually, I segued from a suburban Golds to a couple of urban Crunches. I'd trained mornings at Golds across the street from the Long Island train to Manhattan. Then I realized that if I took a much earlier train and worked out in the city I'd get ground level covered parking right next to the train platform instead of having to park blocks away in open air lots in the snow. So I joined a Crunch between Penn Station and my office and noticed an immediate difference - the bodies of the members were much more ripped and refined, but something about their faces were a bit off...then I realized many of them were in their forties and fifties, and I'd been used to lifting alongside kids in their teens and twenties. That Crunch lacked a pool and on my "off" days I'd go to swim laps at another Crunch that had one and noticed a big difference between the two. Back to Crunch vs. Golds, the other difference was in the suburbs I was the King Of Yoga alongside the typical suburban housewife; in the city, competing with lithe 90 pound 25 year old gals doing headstands and backflips, not so much.
One other thing - I once brought a surprise birthday cake from Magnolia Bakery to Crunch for a friend to share with the staff and it was like opening the floodgates, you never saw cake disappear so fast! But since most of the trainers were ex-cons (true) maybe they thought there was a file in it.