Buddy I have a lang84 and its performs awesome just like they claim! Very solid build. I use it year round. My only grip is its heavy and can not push it around the yard so I have to hook up the truck to fine tune the spot I want it in. I am thinking about putting a wheel up front to see if that helps. I have fed hundreds of people off that rig in rain or shine! Make sure you got a good hook up on wood...I go thru a lot and being picky about what wood I want burn sometimes get me in a jam. Ritchie
I had a 36 patio that worked great a`s Al said. Sold it and got a 60D for the extra room. It's just the right size for home cooking and some larger cooks.
Go 84 or bigger if you plan many really big cooks.
I'm sure the SF cookers are great but the 18 month wait and non-refundable deposit were show stoppers for me. The Lang wait was 4 weeks and they are only 100 mile from me.
You won't go wrong with a Lang of any size IMO.