We did a two day tour with Mr. Nong in the National Park Khao Yai. He picked us up at our hotel in Pak Chong which was great because the national park is fairly far away from Pak Chong and best discovered with a car/pick-up.
We walked with rangers through the jungle and were looking for wild animals. Among other things, we saw Gibbons, Hornbills, other birds, water lizard, etc. The tour was great and he encouraged us to ask questions, explained a lot, and made plenty of cool pictures from us and the animals with his iPhone and a more professional camera. Aside from the jungle tour, we got lucky on both days and saw many elephants roaming the meadows. Each day we ate at the park for lunch and went to a Thai restaurant for dinner.
We can definetly recommend a tour with him. He was helpful and flexible to our needs and wishes.