I feel comfortable at WOW. The contracts and offers are very fair, with no hidden gotcha's. I'm extremely happy with the value I receive based on the cost of my membership.
Some of the equipment shows signs of use, but variety and availability is excellent and broken items are promptly fixed. I don't expect a gym to look like a fitness equipment showroom.
A great test of the club's ethics was passed with me a few years ago. I needed to cancel my WOW membership. All it required was mailing them a letter stating I wanted to cancel, and THEY PROMPTLY DID IT! No hassles, no BS. When I wanted to attend a gym again, the offer I got in the mail was exactly the offer I got. Imagine that!