Both Concerta and Vyvannse because they are extended release medications tend to be smoother on the release then the short term stim meds. So yes, if you do go the medicine route, either of those would be worth trying. Just remember low and slow.
But, perhaps, more importantly, You just mentioned several things that are symptoms of Sensory Processing Disorder (or Sensory Integration Disorder as it is also known). SPD is many times missed by doctors because it looks so much like ADHD. SPD is treated by an occupational therapist and meds are not used. You talked about clothes, food, language, melt downs - all are symptoms.
I am going to give you several links that would certainly be worth your time to check out. First check out Specialmoms post at the bottom of this link.
http://www.medhelp.org/posts/Child-Behavior/could-there-be-a-BIGGER-problem/show/1590406#post_7226976
This link is also good (if it goes through) http://childrenwithadhd.net/sitting-still-setting-appropriate-expectations/
This is the link to the main web site for SPD. It has a huge amount of information. I am giving two links. The first is to the symptoms page and the second is to the behavioral problems section.
http://www.sensory-processing-disorder.com/sensory-processing-disorder-checklist.html
http://www.sensory-processing-disorder.com/behavior-problems-in-children.html
Finally, we have on medhelp a SID site monitored by Specialmom. I mention that because if you have any questions about SPD, she will be able to help you much more then I can. That site is -
http://www.medhelp.org/forums/Sensory-Integration-Disorder-SID/show/1396
I would appreciate knowing what your opinion is of the SPD possibility. It will help with further posts from other parents.