I am a gym rat. I have lived in cities all over the west coast and have been to many MANY gyms. LVAC Flamingo location is one of the newer and larger LVAC's in Las Vegas. At less than $20 a month, it is definitely a good deal.
YES it is crowded, YES it is hard to find equipment during peak hours, YES it may not be as clean and posh as a Lifetime Fitness or David Barton, but it is $20 a month people! If you go every day or several times a week this gym is definitely worth it. However, if you are only going once a month, maybe not.
I like this gym a lot. I mainly take the classes and all of the instructors know their stuff. Some of the classes get a little crowded, so I recommend getting their a little early to ensure a spot. Weight training is a little difficult there during peak hours, so is finding an eliptical or treadmill. I tend to go to some of the smaller or slower locations if I need to lift weights or just want a cardio workout. I am very pleased with this gym. A lot of people complain about the two year membership, but it is so cheap that even if you are forced to pay out two years it is not that big of a deal. I have even contemplated getting a 24 hour gym membership and then just using LVAC for the classes. Two thumbs up, but not the most glamorous if that is what you are searching for!