I know this has been a regular discussion over the years. but I have never owned one, never used one and only seen them from a distance or online so value the experience of others. Basically my requirements are I like the low profile, can hardly tell it's a pop top when down, look. I like the USP of the Horizon ex Hilo height, because I like the idea of being able to sit up there with a bit of headroom, it seams that where you get it fitted is most important, not even sure which criteria are most significant??