I'm responding to the OP's opening post, because I've not had time to read the whole thread yet but, after this weekend I'm asking myself the same thing.
I did my first brisket, to Boston butts, and some ribs on my new LSG IVC, and I can honestly say I'm not sure what I've experienced from my stick burner is any better or even as good as what I tasted this weekend and leftovers the rest of this week.
I may still use my offset when I'm in the mood to manage a fire for 12 hours and drink beer with buddies, but it's just so easy to use this LSG IVC.