I definitely like the blue shell better, the other looks cheap-o!
As for looks vs. functionality... I'll throw another one at ya! Here in California, you can save some dough on registration for your truck, by registering it as a passenger vehicle aka. car. Sounds great right? So what's the catch? You're required to have a camper shell on it at ALL times!! This wonderful state thinks if you own a truck, you use it for profit, therefore cutting the load capacity negates that profit and you can only carry passengers. As soon as you take that shell off to run to the dump, and a person of the law spots your plate... red and blue in your rear view!