Trevor,
The KH11's are a summer tourig tire and the 711's are a high performance summer tire.
Since I live in a place where it never snows either would be a good choice for me.
I went with the KH11's due to the W speed rating vs H in the 711's and due to fact that the KH11's were tested by the tire rack and they did quite well.
The tire rack has not tested the 711's.
I highly reccomend the KH11's to anyone that needs a tire that will never be driven in snow or mud.
BTW the size that I am running is 225/45 17 (on my mercedes)
Hope that helps
Paul
89 535ia (currently running continentals ch95 225/60 15)