GMAT Strategy

I am trying to narrow down which GMAT prep class I want to enroll in! Originally, I was going to take Manhattan GMAT, simply because I've gon to a free trial class and I loved it! Plus, one of my friends did Manhattan GMAT and he said it was a really good course! However, I hear Kaplan is great too and they let you pay for the class in installments which is better for me. So I had decided Kaplan is what I was going to do until a few minutes ago....the class that I want and need to be in didn't make, so they've deleted that particular class. And they don't offer anymore classes during or near that time frame that meet once a week. (There are a few that meet twice a week, but I won't be able to pull that off) There is a Kaplan class that meets on Sundays that I could do, but I'd rather go throughout the week. So now, Im considering Manhattan GMAT again. I definitely need help in making a decision. Which program is better? I need a response asap because I need to sign up this week!!!!