Just purchased some 430's for the IS and have a couple of hours in with and without a rider. On a soft setting 1 up they feel noticeably better than the standard IS shocks. Just to be fair, I'm not sure but I may have had a bad stock shock. When 2 up in the same setting it was a bit soft. Wasn't able to adjust them by hand. The turn to adjust feature isn't going to be that easy due to the bag in the way and not having the leverage. I will probably have to buy a strap wrench. Over the winter I also had the front end rebuilt with new progressive springs, kinda feels like a new bike.