University Gym? Apartment Gym? Local Gym?

Ok...I am going back to my university tomorrow for my second year of school, and I am huge on working out! This summer, I did a summer membership at the gym I used all throughout high school and I absolutely love it and will miss it so much. One of the main things I will miss are the people of course, but the group classes as well. When I go back tomorrow...I am debating between using my apartment and university gym only, or joining a gym a few miles away.

Now, you're probably asking why I would consider joining a gym when I have two free ones available. Well, the one at my apartment is free, and 24 hours, BUT it has VERY LIMITED equipment that's not the best quality. The one at my university I would only use on weekends, and use my apartment one throughout the week, because it's down one of my least favorite and most dangerous roads (it's very hilly in my city), and I would go to it to use the better equipment we don't have at the apartment.

Now, my university does have group classes, however, you have to pay for them, and parking sucks around campus...I'll mainly be taking our university shuttle to/from campus/apartment and leaving my car at the apartment during the week. Plus, sometimes they get so crowded, with over 100 people in one room, or they limit a certain number of people or run out of bikes.

I found a gym that offers a lot of the group classes I enjoy, and they're calling me tonight to discuss how much a membership would be for a student. I am strongly considering it because it'd be only a bit more expensive then buying a group ex pass for my university gym, has more people then just college students (which I like because ours gets so crowded and noisy), has convenient hours, personal trainers, and is only a few miles from my apartment. At my apartment during the week, I'd be very limited and could probably only use a stationary bike and treadmill, but I like to be able to mix it up everyday...and we barely have anything. I'm also training for a half marathon and like to cross train with group ex and spinning.

What are your opinions? I have a lot of money saved up from working in high school, and every month my dad sends me a check for rent, food, utilities, and the extra for spending money. I also pay for gas with a card from him. I don't work during the year, just summer so I can focus on school, and am very money cautious. I don't shop a lot, party, or club, so I feel like the gym membership would be a good investment for me. Opinions?

Thanks to anyone who responds!