Decisions

So I want a better saddle, one that isn't so hard on my butt.  But what for a racking horse?

Was thinking about Australian, but read that they're not flexible enough for a racking horse.  The same for most western saddles.

Also read that saddles made for gaited horses are also too stiff to allow adequate muscle movement.

Then there's flex tree saddles, which may not adequately distribute the rider's weight.

There are flex tree gaited saddles, but I hesitate to pay more for a saddle than the horse.

What to do?