Ditto to what Bob said. I had briefly put my front tire back to Honda recommended pressure (I think 36psi) and felt like it didn't actually perform as well, except that it very slightly alleviated some of the shock over rough road surfaces. Well, I'd rather have grip and good handling. Back to about 42psi for me. Rides well.
On rain handling, I'm surprised by the posts above. Last Monday I rode across much of Kentucky and West Virginia right under that big storm system that was moving east, through several downpours, and was on interstate the whole time (having decided that navigating unfamiliar backroads during storms wasn't going to be fun anyway). I rode 65-75mph through pretty much all of it, except for a few periods where I had to slow down due to visibility concerns more so than traction. I thought I felt a loss of grip exactly one time while passing as my rear tire moved over a white dashed line painted in the road, but it was a split second. I'd say after 5500 miles that I have confidence in the stock tires and would order the exact same as replacements.
By the way, will the bike tell you if the traction control system engages?
Jeff