Obviously, Express10 is a more brief treatment approach compared to Invisalign Full. Not only is it limited to 10 sets of aligners, it does not include the built-in opportunities to refine the treatment along the way if treatment is not tracking as expected. In your case, you could see very nice changes with Express 10 but maybe not all of the changes that could be possible if given a more through appliance system. From your photos, it looks like you could benefit from some widening (expansion) in the bicuspid areas to gain some space and for esthetics and this would be better in the Full treatment. Ask your provider and compare the costs....you may be better treated for a few hundred dollars more. Good Luck!!