Nicole,
You have received so many suggestions it will be difficult to make a decision. Everyone has their favorite. I dive Socal year round, in my opinion nothing beats a 8/7 integrated hood suit from Aqualung, Hollis or Bare. They are much warmer than the torso suit with a separate hooded vest. For even more warmth you can add a neoprene vest w/o hood under it and a thin fabric balaclava under the suit hood. If you over heat in the summer just push the hood back, but you rarely will. I just finished a two day trip to San Nicolas Island and depths below 50' we still in the 50's. Fit is everything, over brand. There are online retailers with free returns. I ordered three different brands in two different sizes and sent everything back except the one I purchased.