Fermzilla All Rounder arrived today. I wasn't planning on getting one now but, I stumbled across a link to one on MoreBeer.com that was on sale for only $99! Normally they are $154 and currently on sale for $123 (model FE118). The one I purchased is model FE168. I compared the options on both and looked closely at the photos but, could see no difference. I couldn't pass up a 1/3 off deal so I bought it! Anyway it's mine now and has been fully inspected!
I'm generally 12-15 L/ 4-5 gallons. It's fine to carry at that weight for me and I'm just going from one side of the garage to the other. Transferring to package via gas, so no lifting at that stage of the process. As Josh said the lid is a pain once there's any temperature change. Especially when you're coming back to pitch the yeast a few hours later. I use a variation on a oil filter wrench to open the screw ring part. Then use a screwdriver between the posts and the screw ring to lever the inside lid up.