It goes without saying that there’s nothing on the planet exactly like UE 18 Pro, but the reality is that there are actually a handful of very similar products, all from Ultimate Ears. The best way to think about UE 18 Pro is as a spiritual successor to the company’s UE 10 Pro, a triple-driver model that used to be the family’s flagship and most expensive product at $900, but has recently been discontinued, leaving the cosmetically…