I took the shot for a couple months. Oddly enough, when I switched to pills I started having more symptoms, but that could also be due to other changes in my life. In my experience, there was a definite feeling of having more of it in my system initially; I guess they can't make it release as slowly as would be ideal.
I found it to be the most psychologically tolerable antipsychotic. I've also tried Invega, Risperdal, and Haldol. It made me happy, but without as much of a deadened feel, like I was happy but not due to not being able to perceive.
I think taking the injection for the time being is probably instrumental to your recovery.