Tough call.... I've had a 22.5" WSM and 4 18.5" WSM's.... I got rid of them all, in favor of 22.5" and 26.75" kettles and a Performer..... Works best for me (family of 4) and probably 3-4x a year grill/bbq for 15-30 folks. I like the convenience & versatility of the Performer & the 26.75". I smoke/cook everything on them (briskets, butts, ribs, etc.) with results similar to the WSM's, without the hassles of the WSM's set up, lack of mobility, 3 part construction, etc. That said, you don't have the volume capability as they come stock. From my experience, you will use more fuel in a 22.5" WSM.... Rough estimate would be 25-30% more+-..... Which, if you buy your fuel at the right price, is not too bad..... IMO, it just depends on what you really need for YOUR use..... I must say, the 22.5" WSM does have the WOW factor!