Hi, i was wondering if there was a similar but cheaper option (similar shaft stiffness/slight head heaviness/designed for and works best at 3U) to Li-ning N55 by other manufacturers. On another note, I currently use a more flexible racket at 24lbs, and it feels like there's a limit to the amount of power i can generate effortlessly. Would increasing the string tension on this flexible racket help, or should I move straight on to a stiffer racket? I've tried the N55 as well as Victor Artery CLS 8900 - both of which doesn't have this feeling of limitation, if you get what i mean... Thanks in advance.