My first Spyder, a 2015 F3S, was purchased with original Kendas. There was a moderate to severe balance issue at certain higway speeds, that made riding it home from Phoenix to San Diego, a bit of an adventure. That was in late 2022, when tire availabity was challenging. I was able to source some Yoko Avids from Tire Rack and had them balanced locally. They've been wonderfully stable and are wearing well. Rear Kenda lasted anther few thousand miles and was replaced with an Altimax. Both brands have been easy to live with.
My newest Spyder, a 2018 RTL, was purchased locally from a relative with about 11K miles. When it was new, the front tires could not be balanced and were replaced under warranty. When I purchased the bike, the rear, which had worn well, was replaced with another Altimax, which I am, again, very happy with. The fronts still are the warranty replaced Kenda, which will be replaced by some 175/55 car tires that are recommended by the forum, when the time comes.