I took Adderall with Zoloft and it did very much help with those after effect feelings. I felt the zoloft balanced it and made it more smooth. Also the affects of both drugs seemed to enhanced each other.
When I would take an SSRI alone sure it makes you chipper and positive, but at the same time I had all the letharic and unmotivating sluggish feelings.
When I would take adderall alone it made me calm and unsocial and very relaxed but of course it helped with the focus tremendously.
When I added adderall and zoloft together it was like a light switch and I had the SUPER positive feelings, motivation, VERY VERY talkative almost nonstop sometimes, cheerful, happy, and the ADHD control all at the same time, I was superfocused, creative, etc. Very good combo if you ask me. And I didn't feel comedowns. Eventually I'd feel the adderall wear off of course, but it wasn't a bad feeling, it was just an "oh the superfocus and some of those enhanced feelings are gone". But I still felt good. And that was even with regular adderall not the XR. Keep in mind I did also occasionally have a low dose of wellbutrin that I would take with it. But even without that, the other two together were gold and the best I ever felt. The Wellbutrin just sort of took that feeling from other two to an even better level.