I have the 23 and if i was allowed another grill in the house i would get the 32. For just me and my wife i often find that i am using 2 layers by the time i have all the veges on. (Corn, squash, some protein)
Next week i have to do ribs for 35 people and i am thinking that the 23 is just not big enough. Will have to use the trager as well as the KK.