I have the Bigfoot 4000 XL and I love it. You don’t need a floor with any hub. But, you can lay down foam tiles if you’d want. I’ve got the tiles, but never really felt the need to use them. I bought the tiles for use if/when I ever sleep in it.
Second season with one and really like it. Very easy to set up and take down. Straps and hubs are nice. Only issue was one of the thin poles came out of its stitching, wife sewed the corner back shut and its been good since.