arc10 is no way a value racket its rm600+ here. its definitely towards the high end especially you can get a victor bravesword around 30% less at rm420. for comparison sake, you should try the BS11 or BS09 if you like the arc10 or BS10 if you like the NS9900
Nanospeed 9900 is just mainly for fast attacking for it's light shaft and little heavy head... arc10 is kinda all around but i prefer ns9900 more cause it's very manageable for amateurs...