What is your reason for joining a gym? That is a key to your decision making not a specific brand. What do you want from a gym membership? The prices vary with what is offered. If you are a self motivator you can get very fit without any form of gym membership and save the money spent on the gym for other things you enjoy. You also can avoid the hassle of scheduling time and making the logistical adjustments required for getting you and all your gear to the gym. Figure if you are going to do just a short thirty minute workout at a gym it can actually demand and hour and a half of your time to get there, get ready, workout, recover, redress and get back home.
There are many resources available which will help you get fit on your own. An excellent place to start is to get and read "Your Are Your Own Gym" by Mark Lauren.
It is called WORK-ing out for a reason.
I said getting fit was simple, I did not say it was easy.
Cardio burns calories, strength work burns fat.
Eat well to lose weight, exercise to get fit
You can not build a six pack using twelve packs
Often when we seek a magic bullet for fitness we end up shooting ourselves in the foot.
"I think calories are little germs in food that all moms are afraid of" Dennis the Menace