Norcal,
It looks like you have lost quite a bit of weight. you started at over 300lbs and now are in the 200's, why give up???
One thing i would like to say is that if you are following a sensible diet and getting regular exersize and nothing is working, you may have a metabolic imbalance. Hypothyroid or PCOS are both quite common afflictions that can make weight loss an uphill battle.
However, if this is not the case, i would take a look at your workout routine.
For one thing, you need at least one day off. Stressing your body too much is not ideal for weight loss. Also, i would reverse the amount of time spent doing cardio vs weight training. I would increase the cardio from 15 minutes to 30 or 45 minutes, varying the intensity and cut the weight training to ~30 minutes. or alternate days. It sounds like your body is not getting a break.
Also, all the diets you mentioned did not mention calorie counting as many others pointed out. Even if you are doing adkins for example, if you are still over eating, you will not loose weight.
I am going through the same dilemma right now and had to take a strict look at how much i was really eating, and it turns out i was intaking more than I thought.
let us know how you are doing, sounds like you've simply hit a plateau.
