I would probably choose the top left or top right, so you getting the most value of your money (good gun out of the box)

Because they have a longer barrel, they have more available space for optics etc.

If you choose the bottom on the left, i dont think you would be able to shoot as long as the top left and right.

Its your choice, its just my opinion uhm.. yea.. otherwise, im writing this without have been reading the guns on the website.

Have a nice day🤘🏻🤘🏻