Experience with New Guinea Expeditions

I am looking for a company to make a trip to the Sepik River. I have found NEW GUINEA EXPEDITIONS of Mount Hagen with a contact of Steven Siminji Tendi.

Does anyone have experience with this company? Have they provided reliable reliable levels of service?

Thank you.

My advise would be to check with the PNG Tourism Promotion Authority to confirm this is a reputable tour company - either by email or on thier website.