It might be nice for the search to default to a (random?) one of those 5 search engines. Then, depending on where you plan on taking this, it might also be nice

It might be nice for the search to default to a (random?) one of those 5 search engines. Then, depending on where you plan on taking this, it might also be nice to see the names of all 5 in the brown strip running across the top of the page so I can immediately choose which one I want results from. In this way, I would get my results immediately (basically a necessity due to user expectation), but I would still be able to quickly choose among the other options after seeing the initial search results.