I started with West Houston ATA over 6 years ago, and it has really been great. The instructors are wonderful, and the student-teacher ratio is very low. This means each student gets personalized instruction and all the attention that they require. It has been difficult to make it to class with a new husband, a new house, going to grad school, and a full time job, but I hope to return when life allows. I miss it a lot.
Pros: Individualized instruction, good workout without the boredom, workouts in pajamas :)
Cons: Spending more time with the kids (Ha Ha)