String types (and gauge)

I dont really tinker the string much, I feel that tennis performance is as follow, racquet choice is 90% while string is 10% or less. I have tried syn gut many times, multi several times, and poly once. The only time, I hurt my arm from using poly, I have then stop using it. So, I did some readings and the result for the different types are based on the following categories (see below table). My take is that I have been using syn gut since the early days. On the gauge, I used 16 on open pattern and 17 for tight pattern.

Type	Power	Spin	Stiffness	Other
Multifilament	High	Low	Low	Loose tension fast Soft on the arm Less control
Syn Gut	Med	Med	Med	Loose tension moderate Depends on tension Med control
Poly	Low	High	High	Loose tension fast Need low tension High control