After researching pellet grills I settled on the 560 because I like the fact that it uses gravity and standard charcoal. Assembly was extensive and instructions good. One thing I noticed during assembly was that there is no way to tighten the casters to the leg. The hex area on the threaded stud is inaccessible once the caster is installed and snugged down. Plus there is no mention in the instructions on installing the casters. Overall quality seems good.  Several of the parts had a very heavy coating of oil, not sure why because they are stainless steel. The M6 screws used for almost all the assembly have phillips heads and are very hard to get tight without stripping the head. Hex heads or socket heads would be a much better choice.  The wire ties for keeping the cables together are kind of hokey, zip ties would be better.