Both bought. They both have their advantages.
The left for a longer overnight type of deal without having to haul rocks to make a ring.
The right. Fire anywhere! The ashes don't fall through which makes for easy cleanup. Also warm feet if you put them underneath. I don't know if I'm going insane, but I got the large which seems to no longer be listed on amazon.
Left: Camco 51091 Portable Campfire Ring https://www.amazon.com/dp/B00KJM7K52/ref=cm_sw_r_cp_apa_i_A6lbCbVXQ4ZQZ
Right: Rootless Portable Outdoor Fire Pit : Collapsing Steel Mesh Fireplace - Perfect for Camping, Backyard and Garden - Carrying Bag Included (Medium) https://www.amazon.com/dp/B01NBU7XLH/ref=cm_sw_r_cp_apa_i_A.lbCbJZVBG89