....Maintainance.

Unless you want to keep bouncing between 20 pounds up and 20 pounds down, how about figuring out where your critical carb level for maintainance is and following that using low carb veggies (and even a few moderate carb ones), low glycemic fruits, whole grains in moderation, adequate amounts of proteins and healthy fats. Yo-yoing is not good for your metabolism or your health in general.
If you're exercising regularly, of course you're going to need a few more carbs, but it seems like you feel that there isn't any happy medium...it's all or nothing, high carb or low carb. There IS a middle ground.
It seems from what you said, both times you lost weight you stayed at very low levels of carbs (induction level) until you reached your goal weight. While this may work fine for losing, it doesn't teach you a lot about what your body can and can't handle carbs-wise or how to maintain that loss once you get to goal without exercising like a demon. That's why Atkins is designed the way it is...you work your way through all levels so that you know how to maintain, how many carbs and from what sources, your body can handle as well as which ones you can't.
There are also health considerations as well as weight. Yup...those high carb foods sure are yummy but they do other things to your body besides make you fat.
Perhaps Atkins isn't for you for life...have you checked into CKD or Body For Life? They might suit you better, especially once you are in a situation where you can exercise regularly.