Discraft Xtreme, ESP flick, Nuke os, Stilletto, Whippett are my first five that I own that come up most OS but amongst them the line blurs for me as to which is most OS. I dont have the power show much difference backhand between these discs on a calm day. Into 40mph headwind (not exagerated ave speed 45 that day w gusts to 68) the faster/flater discs were much more OS, a low hyzerflipped throw with a whippett would turn over whilst the nuke and stilletto would still penetrate and give a baby fade finish. I have bagged all of these discs for at least season or so and I use them almost exclusively for one of three shots- Thummer, forehand flex, or skip. But... on a thummer I feel like the whippet and extreme have more distance potential. My longest thummers have been with the nuke OS and stilletto (Ive gone deep of a 315" slightly uphill shot with both) but the whippet flips noticeably slower. thrown back to back is comes up shorter and is hard to get to edge, often landing on lid. So It seems to behave more "Pig" on the throws that I use this type of disc for most. For now the stilletto is in. Had my last ace with one (blind blocked FH) and I have several in stock-