Prince Syn Gut 17G is a great buy. I hit flat with a head light racket and this string feels soft and provides great control when strung at 58 lbs. I wouldn't say that the playing properties last as long as other more expensive strings or that it provides maximum power but you can't beat the price and it will relieve some of the stress on your arm produced by stiffer strings.
This string is a bargain for the price. It won't generate the spin of a poly but it plays quite well and has good durability. It also makes a nice choice for hybrid set-ups.
Good string for the price. Soft feel.
Used this as a median or middle-of-the-road string to see what characteristics players want on their rackets, e.g. Firmer, softer, durability, etc.
Put this string in a few friends racquets as well as my own. Everyone loved the control.
I am on the court 4+ times a week, and these 17 gauge strings have relieved my tennis elbow. I am on my fourth set, and they last about 2 - 3 months.