The "buffing" type will get shinier than the non'buffing. I still buff the non-buffing, just a little. It doesn't make much of a difference, between the two, once you've sealed it and gone on with weathering.
Back when all I had was the buffing type (rattlecan), I turned a new sock inside out and used that to buff. Before I started sealing it...no matter how much I buffed, some would always come off and I'd end up with the stuff all over the decals...it was a mess!!!