They sound similar but if your room is med-large go for the 6100 there dynamic capability is mind blowing. I currently have the 760’s up front but will be moving them to the rear for surrounds and upgrading to the 6100 for the front three with the center 6100 in a horizontal configuration below the screen.
My room size is 13x24x10 this room gets more use than our dedicated HT room. Send me a PM and I will give you some details include your room size and layout