Mmmh I'm sorry but for me, the Extrema Ratio, absolutely NO!! It is an italian brand, and I'm Italian so I know him well.
They are not absolutely at the level of their reputation.. Here in Italy they run a lot in the used market, and if you keep them behind a glass it's ok, but if you use them, they are extremely disappointing. The folder has a closure that often breaks, and the fixed blade is often breaks the handle..The "Forprene" is similar to plastic, in the end.. They use only the N690 for all the blades, it's a good steel, but not excellent.. Just watch on YouTube the test of these knives, totally disappointing.. For knives in a so high price range, at least.. They say they supply the military, but ALL of the military that I know, have told me that nobody military uses an Extrema Ratio on the field, and never would entrust their lives to an ER..