I have tried RIP control, ALU Rough, ALU Spin, SPPP, and X-One Biphase in my Head Speed Pro. Its a 16x19 strung fully it sits at 12.3ish oz. The PHT is the best all around to me. I am a string breaker, because I use lots of slice and spin related shots. I also like to swat the ball. These strings have been solid in durability. The spin is great, and the power is decent too. There is also decent control with these. It is the best all around string for me. if you want to spend a little less, get the Pro Hurricane, but these are great all around strings for a player like me, who wants something that will last. The strings don't really move, and the only thing I can think of is it loses tension over time, but every string does this. Buy a pack, and you won't be disappointed. The only con is my racquet is pretty stiff in its own right. When I combine that with PHT, it is a darn stiff racquet. So older people, or people with a lot of shoulder problems may not like it. I suggest Red Code, for something a little softer, and if you aren't much of a hard hitter, or not a string breaker, I do like the Rip Control, and its real easy on the arm.