I'm a 3.5-4.0 all-court player. I currently play with a T10 Mid V-engine and like it very much. However, particulary when playing on clay, l find it a bit too demanding and feel I need to work very hard to get good spin and find the sweetspot. Power on my serve is also an issue. The other day I had a chance to play for an hour with a C10 Xtended and found it an excellent racquet. I served great with it and it felt very comfortable from the baseline. It seems to have a very large sweetspot (at least larger than the one of my T10MidVE). The only weakness that I found was at the net: the racquet felt a bit unstable particularly when volleying against hard hit balls. This could perhaps be fixed by adding a bit of lead tape. So, before I venture out and try to buy one (my understanding is that they are very difficult to find now) I'd like to hear some feedback from people that have tried it out. One concern I have is that I have a 1 HBH that tends to break down from time to time and I am afraid that the extra length of this racquet might make things worse in this area. BTW: I have also tried the regular C10 Pro and liked it, however it doesn't give me any substantial improvement over my T10MidVE.