I've only recently joined this site, so I'm not sure i'm a full on brethren.
It really depends on convenience, charcoal/gas preference, and how many people you feed.
I have 3 cookers right now, a 18" WSM smoker, Weber Performer 22" kettle, and a Weber Genesis II LX S-440.
The S-440 can cook for a crowd, its got great grease management and cooks very evenly, no flare ups. I cooked a whole mess of marinated chicken cutlets on it this past weekend for a lot of people and everything was evenly done, no flaring, no blackening and some great Kielbasi, I was able to cook it nice and even, and got just the right level of doneness. I haven't tried searing steak on it yet.
The Weber performer gets really hot and can give a nice sear. I'm new to it, so temp control is harder for me, but it has the ability to really really sear something and add that charcoal cooked flavor. I need more practice and hopefully it will work better for me. Honestly after having worked with the performer, I'd probably skip it in favor of the 26", I feel that the 22" starts feeling pretty small quickly when you're trying to cook indirect, but I need more experience, maybe I'm doing it wrong.
If I had 1 grill, I'd have the gasser, but thats b/c I've grown up cooking with gas, and am new to the whole charcoal thing.