Purchase the 500 RSIB of the build qualities the Sear Zone, Rotisserie area. I like the way it was easy to unpack. Assembly wasn't hard, I did it by myself. However you do need help with the top portion. The hardest part of the assembly was the putting up the Sear Zone. Only because the picture doesn't show a clear view of which wholes to put the screws I did cut my finger because I place the screws in the wrong hole and it fell cut my finger. Make sure to unpack everything each package contains bolts for each step. Pre drill holes made it easy and fast.
   My first cook was small. I am use to cooking with coals so this is a learning curve for me.
This grill heats up fast and maintain temp well.