I have a 26er (22 SnS) and a 22 WSM.
I use the 26er at least 3-4 times a week and have done everything on it except a brisket. Not because I don't think it could handle it, but just because, situationally, I was doing other things on the 26er.
I only use the WSM 4-5 times a year, but would never consider getting rid of it. For me the WSM is like that specialty tool that, when you need it, it's really what you need. Also, I have the WSM set up for my CyberQ which really takes all the pressure off on those really long cooks. I know my WSM is a hog, but I can put a brisket on, go to sleep, run errands, etc. and not have to worry or check it until I've hit the stall. Could never do that on my 26er.
I know that a lot of you guys have many, many, many Kettles (I do not) so that would be the only reason I would consider selling the WSM.
BD