My ol MES 30 Gen 1 is getting wore out, I’ve modded it with a vent, put a stack on, tore the back off more times than I can remember with new elements, wires, etc. I am contemplating a new MES 40” – From what I’ve read the 2.5 model is the one to get, I think? I really want 6 racks, I do allot of jerky, ribs and such and never seem to have enough rack space. How do I know which model is the 4 rack and which is the 6 rack? Any pros and cons on 4 vs 6 rack? Seems to me more racks is better? Thanks for any info!