Muse is an EEG device which has developed as a meditation device. It has 4 channels, 1 reference and two ground electrodes. The Muse headband comes with electrodes placed on Af7 and Af8 location if you are following 10-20 International Standards. It is one of the easier bands to get started with if you are interested in learning EEG as it requires no head prep.
US Price (as of January 2017): $200
The OpenBCI is an open source EEG and can go to a maximum of 16 channels. It was originally a 2013 Kickstarter project, but has expanded the original concept to include an open source 3D printed cap. There is also a 4 channel system which can be purchased if you need something cheaper.
Any paradigm which needs only 16 channels or less
US Price (as of January 2017):
4 channels: $200 8 channels: $500 16 channels: $945
The Emotiv Epoc is one of the first consumer EEG devices released on the market. The popularity of the company surged in 2012 and 2013, which can be reflected by its sales and number of DIY projects.
The Epoc is more stylish and easier to wear. It has 14 channel EEG which has a static form factor. This board is a good option for easy development and it only requires software experience. It is a popular device to use for EEG research as the cost is much better versus other research grade mobile EEG providers. It is however less economic than other commercial headsets and has an additional cost for accessing the data that the headset collects.
Many paradigms which need only 14 channels or less
US Price (as of January 2017): $800
The Emotiv Insight was the second product which Emotiv brought the market, and was marketed as a more economic option to their first product.
Many paradigms which need only 5 channels or less
US Price (as of January 2017): $300
The Neurosky is one of the original consumer EEGs on the market. The design is simple and only has 1 channel meant for use. Some people say they have built more complicated products with them.
US Price (as of January 2017): : $100
|Device||Channels||ADC Bits||Sample Rate||Motion sensors||LSL Support||SD Card Support||TTL||Battery Length||Cost (US) as of Jan 2017|
|Muse 2016||4-6||12||256 Hz||3 axis||Yes||No||Maybe||5 hours||$200|
|Epoc||14+2 ref||16||256 Hz||9 axis||Possible||With accessory||N/A||6 hours using BTLE||$799|
|Insight||5+2 ref||15||2048 Hz||9 axis||Possible||With accessory||N/A||4 hours using Bluetooth||$300|
|OpenBCI||up to 16 channels||24||250 Hz||3 axis||Yes||Yes||Yes||~26 hours||$500 for 8 channels, $949 for 16|
|Neurosky Mindwave||1+1 ref||12||512Hz||N/A||N/A||N/A||N/A||8 hours||$99.99|