Tires!

I have a set of road 6s on my st 1300, they are down right impressive in wet conditions. People on the st forums are claiming 9-13k miles out of the michelins mounted on the rear. Once the s22 on the rear got close the wear bars on my MT, I installed a set of dunlop mutants, while not as sticky as the s22s, wet weather performance is rock solid. They have over 4k miles on them and the rear is not even halfway to the wear bars. The tread pattern is a bit polarizing, most people at first, didn't like them. After awhile of my coworkers seeing them, I started to get compliments. I personally like the look of the tread pattern, I think it compliments the style of the gen 2 mt.

I used to be all about sport-touring tires, but having gone through numerous sets I've formed an opinion or two. Which tires to run is a highly subjective topic; there are countless conditions to consider so the best you can do is generalize for the most part. I'm assuming we're talking about street use only, and cooler, possibly wet conditions.  Michelin Pilot Roads are good.  Expensive though.
ST tires generally wear like bricks, lasting forever compared to soft compounds like the s22. This can be good and bad. Good because you're not buying tires all the time. Bad because most of the tire's life will be used AFTER it's profiled out and the handling is compromised. Or maybe the tires form some cupping and get all wonky that way. Probably both. Maybe, though most of your riding is on the highway in a straight line and a vee'd-out worn profile front tire won't really be noticeable.
Personally, I hate the feeling of a profiled front tire. It messes with my lean confidence and cornering lines because the tip-in sort of hangs around in the flat spot in the tire, and you've got to force the bike past that spot to lean more. The more worn the tire, the worse it is. And like I say, the ST tires last an eternity so there you are with a crappy handling tire that is going to be around for the next 10k miles. And there's one example of the subjectivity of tires. It's never ending.