I have an 1100.
I started with a log (Corbin). Next was a Travelcade by Saddleman. The 1300 Stealth also has a gel insert in it. It gets really warm setting in the sun. That might be nice on a cool day but in Florida, the gel insert is a firm NO. I finally choked down writing a check (this was before internet /credit card use was reliable) and sending a seat to Russell. I've never looked back.
The Stealth by Saddleman is $531 on the ad I saw. That's approaching a Russell, price wise. If your seat is a 2 piece seat, just do the front half. If the 2 cover not matching bothers you, Russell will put a matching cover on the rear seat.
It all comes down to how long you going to ride a 1300 and/or how long will your rides be. My old riding buddy had a 'Wing (1500) and never mentioned the seat. His rides were never more than 100 miles without stopping. One year he decided to join me on a trip to NC. (650 miles). On our meal stop, he ask how much farther? He was an un-happy rider the last couple hundred miles.