Glad you're feeling better on the Risperdal. I don't blame you for quitting Zyprexa. Seroquel did the same thing to me (causing severe depression), so I quit it and felt better shortly after.

Be careful with the Lamictal, though. If you ever go back on Lamictal for whatever reason, you should always slowly titrate up your dose because the faster you increase your dose, the higher the risk you have for developing Steven's-Jhonson's Syndrome (SJS). Usually doctors start patients on 25mg for that reason.