Wow I can really relate to your struggle. I tried every antidepressant and antipsychotic on the market. All of them left me feeling foggy-headed to the point where I stopped taking them. I may have days where I don't want to be in my own head, but that was every day when it was cloudy.
That's not to say they don't work - I took zoloft and another I can't remember the name of but it started with an L I think. Lexapro. I was on those for a year and they really helped for a while. I was also on Abilify, and that made me shake uncontrollably and I believe was mostly the reason for the foggy feeling. But they helped me in my darkest hour. I now have an 11 month old daughter who helps amazingly when I'm really down. All I need is a smile and a giggle and I'll feel 100 times better. The ache in my heart will still be there, but not to the point where I can't deal. She also helps fill the painful void that goes along with depression.
Have you tried Lexapro? It's supposed to help with depression and anxiety. It worked for me while I was taking it. I just don't recommend Abilify. The side effects were embarrassing - shaking uncontrollably at work is not a positive impression to make.
Any way you go with that, I wish you luck, and I'm on here every day if you'd like to talk more. This board has been my saving grace.