Honestly if the reason you are using IEMs is you need sound isolation you may want to buy a pair of Sony XM4s or XM5s (If you can afford them, of course) people here will blast me for this suggestion but their comfort is very good, you generally don't have wax build up issues like you do with IEMs and you can EQ them to sound much better than they do stock too.

Otherwise do check out the JBL 760NC, they have excellent tuning while still offering NC features.