I love my Sensaphonics 2MAX, so I can vouch for the company's quality. Great bass response. Never tried their 3D system, but I hear it's outstanding (and for what it costs, it better be!).
Ultimate Ears have an optional ambient feature that would probably work for you too. Our guitarist uses the UE7 Pros and he loves them:
Ultimate Ears | UE 7 Pro Custom In-Ear Monitors
There may be other companies doing that -- but they're probably all custom molded. Not sure what your budget is.
I have our engineer mix in the two mics upfront to get the "feel" since my Sensaphonics basically block any and every noise!