theme for wordpress

I've been looking into getting into amazon affiliate, I already have my niche(Technology) but confused on what theme to use. I've done some research and heard that using a fancy review can be bad and then again I heard it could be use for good. Same for a simple theme. What do you guys suggest?

Simple but good looking, your goal is to get them quickly to Amazon, not stay on your site.

try to use a simple, and clean navigation theme,