I’ve identified two potential headsets for EEG data acquisition. Over the course of the next several months I will be evaluating each.
The Neurosky MindWave is a relatively inexpensive ($99) option, but is limited in that it does not have APIs for raw access to EEG data, only to am affect model developed by the manufacture. It also utilized only two EEG sensors, so it is somewhat limited in its reporting options.
The Emotiv EEG headset is a more expensive option (at $250 or $750 depending on licensing), but it utilizes a 16 sensor setup and has APIs for raw EEG data as well as affective models developed by the manufactures., including an api for interpreting facial expressions, emotional states, and subject intent.