I'm still doing my grilling on ye olde PK Grill, though I got a Weber kettle around too. The smoking is on WSM. I got a gasser as well, but it is mostly the wife that uses that one. It is quite nice for things like quesadillas etc
I guess the kamado is a do it all solution. You can grill on it, smoke on it. I could really see myself replacing the PK and the Kettle with a Kamado Joe. The WSM is very nice for doing big batches of ribs. I've done 12kgs of ribs on it, it is a tight fit, but it goes.