Sig. I don't have a 711 but I do have a Bulldog regulator, basically a Milreg with a different nose on it, roughly the same size as the 711 but with the regulator grip.

I DO have a 911. IT IS NICE, but there are times where the 2 inch smaller blade would be nice. As if you are out fishing 9(Or Squirrel/rabbit hunting) and you only have one knife. The 711 would be easier to use than the 911.

Just saying. IF you like it and don't need to sell it to fund something else, I say keep it. You might grow to like/use it or will just have a Spare.