The Atkins Diet is good IF you follow the diet perfectly. That means taking the proper supplements. The 3 phases of the plan are designed for long term. The Atkins Diet can be the WORST diet if you cheat on it. It seems that everyone wants to stay on the 2 week induction part and not phase into the other stages.
A tamer version of this same lo carb diet is Sugar Busters. It allows carbs, but they need to be complex carbs.
Here is a really good forum that discusses alot of diets and gives pros and cons and offers some unique features... Just be aware that not everyhing that you read is true, but they do make a concerned effort to back up the info with facts that you can check into...
http://forum.lowcarber.org/forumdisplay.php?forumid=25
hope this info can help answer some questions.....