I really like my Selle SMP's...(Glider & Forma)..they do fine in the rain and mine were comfortable for me out of the box. I had the same creaking problem with a saddle but it turned out to be the seat clamp on the post. The clamp was made of carbon fibre and the seat rail was titanium....not a good combo for some reason. I used loctite blue on the rail and it fixed my creaking noise.

Love my old Brooks saddle from long ago.....still ride it some. Hope this helps...........