Either i wasnt clear enough, or you guys get too many choices! those arent different design options.
Those are all the same with modular components!
If you just want a slide, just buy a slide. if you like the undergrip, buy that too. if you just want a feed, sure ( that would look a bit odd on top of a phantom with the slide clearances though)
Im trying to keep it as simple as possible, by making it modular. buy the bits you want and assemble how you like it.
I was really looking for opinions on looks lol.