Hello, I'm ready to pull the trigger on the new pair of IEMs, I have around 500USD to spend including shipping and customs so I narrowed my choices to JH5 custom IEM Noble audio 4 (universal) I currently use a pair of hd600, but they are not very practical in the office and of course I can not listen to them when I commute. I'm happy with the sound of hd600s though. JH5 is an entry level, two driver CIEM - will I be disappointed with the sound comparing to sennheissers? How good is isolation on universal Nobles? Can I use comply tips with them? Thanks in advance for your help! M.