Without trying to write an overly positive review, I can’t help by saying that either one of the the three will make you a happy customer. I know that some people, me included, have the “must have the best” sickness, and we will have trouble sleeping until we’ve gotten our hands on the JH16. Poor wallet.
What makes the JH customs very easy to recommend is because they all come with an amazing musicality that spans a very wide range of genres. The extra money always translates to something significantly audible to the ears (this isn’t always the case in audio), and even in the case of the JH16, I really don’t think it’s a case of a diminishing return.
If you want to have a customs that you can enjoy and take out to the gym and travel without worrying too much, the JH5 is great. It’s quite easy on the wallet and gives you a satisfying sound straight from an Ipod. If you want something fancier, the JH10X3 is actually very balanced and more neutral sounding than the JH16. With a good source and a JH10X3, you’re well into the realms of high end.
For the lucky few who can afford a JH16, congratulations. Try playing some quality bass music and you’ll know where the extra money goes to.