So, in general, what do people think of firms like T3, Kershner, Chimera, WTS, Trillium, FNY vs other equity derivative firms like SIG, Jane St, Wolverine, Optiver, Bluefin etc. It seems like at the latter firms, the training is better (you at least learn about options), the methods are still relevant (the training at equity only firms seems focused on reading the tape, other methods that seem a bit dated), and are better capitalized. Have people noticed a difference between the two types of firms? Typically, I've noticed it, but I wonder if other people notice it and what the reason may be? It seems like the equity only firms seem more focused on churn than production. Is this substantiated at all?