I'm still running my stock seat on my 16 Ultra Limited. I'm typically pain free for 3-400 miles. As soon as I get any discomfort at all, I throw on a Wild Ass bladder to to change the seating position a bit. I just switch it on and off at gas stops to keep changing the hot spots on the nether regions. Does anybody out there have experience with an HD or aftermarket seat that you can actually ride 1000 miles comfortably on? I'm about 6', 220lb if that makes a difference as well. Just trying to narrow the the list down to some that others have tried.