I don't have a Jackpot but in all the bikes that I did have in the past I used Avon with no problems and very satisfied!!
I just installed them in my Kingpin and is impossible to be happier, I never felt safe with the Dunlops and now its a very different movie!! I read in many places that the Avon is not a tire for the Kingpin and after many years of satisfactions and good results with other bikes, I gave them a try and they work flawlessly!! I got some Dynabeds also and they do their work too!!
How are they lasting the Avon Cobras? How many miles? I had the Venom on the rear of my Triumph and really liked them. I also heard people pushing the new Michelens. I would actually like to go with the Avons when it is time.
I have about 6000 miles on them and still look like new. They handle great on curvy roads and work well in the wet. Very happy. I'm on my second set on my v-rod. First set lasted about 12,000 miles. Not bad.