As you're mid tour id buy a basic air seat as an older solid GS seat turned me to Airhawks... That was 19 years ago and most of my bikes since and 2-300k miles have had one used...
I've had then rebuilt and another seat but never quite right... My old K100LT touring seat was the best but I ran out of Ks to fit it too .. GS seat was the "brick" after that...
I used Tom Hurley to recover my 20 year old 1150gs seat. The original foam was still in good condition so no change required there. A friend had his 1250 seats resculpted and gel pads fitted.
We were both very happy with the results.