Matt,
We have two 8' X 8's that we use for shows. Since all of our shows are inside, we use some small lights, clipped to the braces inside the canopy to help keep it bright in the booth.
Something to maybe keep in mind though... in our situation, not all booth spaces were 10' X 10'. A couple shows are only 8' X 10's. We went with a 8' X 8' canopy so that we didn't have the issue of not fitting in our allotted space.
SP