I recently switched from 2mg Abilify to 300mg Seroquel XR after Abilify was giving me some nasty jaw clenching/grinding problems. The first couple of weeks were tough with side effects (mostly sedation/sleeping).   
On Abilify I usually leveled out at “just slightly better than totally apathetic” and felt generally blunted. On Seroquel I feel like I’m actually accessing the full spectrum of normal emotions. My depression is usually lethargy/apathy and I get so depressed I can’t cry. A few days ago I cried for the first time in a year or two, over something I really needed to cry out of my system. Other than that evening, I have felt really, really good. I have energy, things just seem brighter and more potent, but I don’t feel like I’m crazy or losing control like when I’m manic. God I love this medication. I hope it continues to work for me.