I've yet to own either of these, so to those of you out there that have one and use them, how good is the venting system on them? Does having the vents higher up on the sides make a difference (good or bad) in temperatures during normal cooking (grill on it's own w/o any mods) as compared to having the bottom daisy wheel vent on a SJS or One Touch sweepers or 3 daisy wheels on an 18.5 standard kettle?