Hi friend, Obenauf's LP is still my choice. If they're Really Dry, probably ok to begin with Proofide or Obenauf leather oil to get more of that oil content.
After it changes color from the oil it takes up, switch to Obenauf's LP.
Also, any time you apply anything, buff it out slick, even if you wait to the next day to do it.
Don't apply anything too frequently - wait at least a week, and decrease frequency with life - never apply anything to a wet (with water or sweat) saddle.
Found this macro of my 15,000+ mi Brooks - the veins in the leather are alive, or at least well-preserved.
I have major mildew allergies, and can smell mildew at a distance, am wary of the whole biofilm-affected corrosion that can destroy expensive antique fishing reels. But I have actually recovered some mildly mildewed leather items with Obenauf's.
Beeswax is a natural antibiotic. (Honey is the only food on the planet that doesn't rot)
Also, with your saddles in good shape, Obenauf's to the top with the blow drier may be just the ticket.
I also use Obenauf's on the bottom of a new saddle, but as
@dnc1 mentioned, the bottom of the saddle is also the best place to use the higher oil-content treatments.
I have a Brooks Swallow Select stashed in reserve - found it for $99 close-out, and grabbed it at that price. It's there when I need it, and I give it a light coat of Obenauf's inside and out about once/yr
