i don't think the term Nu-Dubstep even exists does it? It's all dubstep. Some of it is more wobbly bass focused and some (what you refert to as 'old school') is more about being deeper and focusing on precussion. This is the case with every genre of music. house, D'n'B, hip-hop etc... they all have styles from each end of the scale. You dont have to like them all.. I know my personal taste for any genre of msuic is the deeper stuff. If i dont like something I just dont listen to it. The masses generaly tend to like more banging stuff though.