I went with the Agency Power intake, its the open box design, but seals against the hood when closed. I spent a lot of time looking at gains and they were all about the same, 10ish hp, youre not going to notice and gains honestly. Sound seems to be the biggest change ive noticed. I also reached out to several companies regarding their warranty and most of them replied with "our warranty covers on road use only" kinda weird considering our trucks are built for off road use. Agency Power however said we warranty our product for any use, unless you run it over with your truck and break it lol. So they were my choice. Hope that helps!