depend what are you looking for. please be more specific. for example, ns7k is head lighter than ns8k. ns8k has slimmer frame than ns7k. ns8k is easier to smash and clear then ns7k while ns7k is easier for defense. without specific question, my answer will be very vague. i think i am not even going to bother to answer.
i play doubles, so yeah attacking is more important but defense is pretty important as well... im a hard hitter who's game revolves around power so yea... i just use it as my 3rd string racket just in case my two first nanospeed 8ks break...
hm.. u want a nanospeed.. u want to smash.. that sounds like nano 9k so why dont u get that instead, nano9k is the "offenseive" versions of the nanospeeds
The K Factor This Yonex series is called Nanospeed... ...and the models are 7000, 8000, 9000, etc. Typing 7k, 8k, 9k, etc perhaps looks cute... but in no way does this assist those who later search for information on these models. Spare a thought for those who come later. It helps to use the model number as it really is.