Pick one that looks good to you and doesn't cost much. There will be absolutely no performance gains either way. On some vehicles, removing the stock airbox and replacing with a short ram or CAI can make the engine bay much nicer looking and accessible. I doubt it's the case with an F-150, but my '01 Civic's airbox and intake silencer assembly were together bigger than the entire engine. I got rid of that mess real quick. I put on the cheapest eBay intake tube I could find (for my application, they were all the same from $40 - $400). Didn't add power, mpg, or sound (nor did it hurt anything) but I don't have to remove all that stuff just to do the simplest things now.
If you do decide to go that route, make sure you get a good quality air filter. I like AEM DryFlows.