I've used the Bonfire size a few times at a friend's place and had to have one in my own backyard. Ranger is smaller and portable. Like most people note, precut size logs need to be cut down if you want the smokeless feature to work properly but it still functions if you don't cut the wood down. And eventually, it does burn down to a smokeless point and still efficiently burns wood to ash. I love this fire pit and can't wait for cooler nights to have more comfortable reason to fire it up!