adderall, concerta & depression | ADHD Information

just wondering if anyone here has also experienced depression as a side-effect from adderall and/or concerta.  I recently (finally!) figured out that I am ADD and have thus far tried Adderall and Concerta.  Both of these seem to result in depression after a few days on the medication. 

I have read that Concerta has been known to cause depression in some cases.  My understanding is that this is not a common side effect, but not unheard-of either.  I have not yet heard anyone complain about depression related to Adderall.

I'm hoping there will be some medication out there that will work better for me ... not sure what to do next.

Thanks in advance for any advice.