Why are they tough to string?
My parents did not have a lot of money, but they indulged my sister and I where they could - anything related to education or activities (sports, music, arts, etc.).
So, every year they would let me get a new racket and the Edge was among them. I also got a Head TXD, and some other frames based simply on looking at the pretty pictures in Tennis Magazine (some white Yamaha and the white Pro Kennex Silver Ace among them).