I've taken Saphris! I actually JUST recently switched from Saphris to Geodon. My main reason was because I was gaining weight on Saphris, (even though it's supposed to be weight neutral?) Well so is Geodon. I actually tried Geodon in the past and it made me incredibly tired, (silly me I took it during the day though) and Saphris is actually mildly stimulating for me... it makes me feel physically anxious, kind of like restless leg syndrome but not AS bad. Sometimes I would rock myself back in forth in bed at night because I just "felt like it" lol, hard to explain. Overall it was a great medication though! Really helped with my manic symptoms. I only switched because I wanted to try another weight neutral drug, and the sleepyness side effects were welcomed because I've been having trouble with insomnia. (not sure if it's related to the saphris or not but I did find it took me FOREVER to fall asleep after taking it... my friend takes it and it knocks her out and she can't sleep without it though! so everyone is different).