not that i am an expert as i have only been flying for a year and a half. i use a david clark h10-13h with the gel seals and find really comfortable although not cheap. i have an adapter p/n 18253g-05 which splits into the two plugs for the flaps stuff and had no problems.
www.davidclark.com will have a list of approved suppliers. they do have the adapters that go the other way but i dont know the part number. ( i am only flying fixed wing to get a cheaper instrument rating and not jumping the fence)
hope this helps.
helipilotnz