I've tried many multifilaments over the years, and liked the Technifibre ones most NRG/X1/515. That is, until I tried Dunlop Max Comfort 17. This string has the same level of power as the Technifibre multis but with more ball bite. The bite almost reminds me of Kevlar or aramid. The strings don't move much and seem to have good durability. What's unusual is that the string has the power of a multi, yet the ball bite of kevlar. Feel and control is superb. The only downside is that the strings eats up balls quickly. Even though I don't use alot of spin, a fresh can of balls will be worn out after 2 hours with the string. I noticed quite a bit of ball fuzz on the strings.