Weaver sliding dee with leg straps. quite comfortable to me, but fairly heavy also. I began changing my gear to lighter pieces. All that is left is the saddle to lighten up now. I've been looking at that new saddle-x by bashlin, and recently looked at the butterfly II. I think both are great saddles, but I want to know what the downfalls of the saddles' durability might be. Until I make my final decision the weaver will keep working for me.
Oh yea, I also tried the bosun seat saddle that the SSA has and found it quite comfortable if you are hanging, but a little cumbersome when limbwalking. I say evaluate your own tendencies and choose based on your climbing style.