What the hell should I do?

Okay so it's been so friggin hot lately I don't want to work out on the Bowflew! Our house is so damn hot! So I've been debating on whether or not to join the gym yet again. I am thinking either Curves or 24hr fitness. Curves is cool because it is very convenient and you get a great workout in 30min and it's not intimidating but it is more expensive. 24hr fitness is cool cuzz you can visit any of their locations and they have classes and it is less expensive and no contract. It's farther from home but close to my job. Curves is closer to home. Damn what a dilema...I am just thinking which one I would stick to?