Msr is way smaller and way lighter. Not as efficient on fuel however you can get a solid week out of the smaller can so efficient enough. The Jetboil is a little more convenient which is why I have one for the truck and truck camp's. More convenient mostly due to how it is not as suseptible to wind. Like on a tailgate with the msr I found myself building wind blocks with contents in the bed of the truck where with the jetboil does not have that issue. So in the back country or anywhere out of my pack I started carrying a little foil with the msr.