I have been enjoying my first set of Monogut ZX (brown) over the last few weeks. It is very soft on the arm, powerful (lowish tension), and good spin/control. It may be a little less predictable than my previous string (Ashaway Dynamite 17 soft/natural/green) because there is a lot more power when I centre the ball than when it is slightly off centre.
ZX feels a bit like Head Sonic Pro 17 (soft poly) but is softer and does not loose it performance quickly like Sonic Pro.
The ZX is strung in a Head IG Radical OS at 50 pounds (the recommended range is 48 to 57). The previous dynamite 17 was strung at 50 as well.