Originally Posted by Bash and Crash
Does it have to be Technifibre string? I've been using Volkl Polyfibre and Rpm Blast combo and plays very well although they wear out quickly for me, should last for a 10yr old, but could easily swap others(MSV,Cyclone, Big Hitter Black) for RPM. I think you can easily find another combo that plays just as well and saves you $$.
My Daughter, just made 11, plays with a Pure Drive strung with Xcel 17(mulit-filament). She hits hard, very hard, for an 11 year old that is, and the strings generally last about three weeks before she busts them, with about 10 hours a week practice, plus tournaments on weekends. We have played around with other configurations but I've settled on this for this for a while. Never had any arm problems.