1. Duo Coronet (USD 795.00) + CoroNase(USD 295.00) - transcranial and intranasal are sold separately - emits deep red at 670nm, and near-infrared at 810nm - wavelength is pulsed at 40Hz (Gamma) - the total price for the combo is USD 1090
2. Vielight Neuro Gamma 3 (USD $1,799.00) - it is transcranial and intranasal - emits pulsed 810nm NIR - comes with only Gamma mode.
Gamma (40Hz): focus, memory, brain energy.
3. Vielight Neuro Duo 3 (USD $2,399.00) - it is transcranial and intranasal - emits pulsed 810nm NIR - comes with both Alpha and Gamma modes.
Gamma (40Hz): focus, memory, brain energy.
Alpha (10 Hz): relaxation and sleep improvement.
4. Vielight Neuro Duo 3 | X-Plus 3 Combo (USD $3,168.00) - same as the Neuro Duo 3 but includes an extension for the cerebellum and thymus gland.
6. NEURADIANT 1070 ($2,995.00) - it is only transcranial - emits a wavelength of 1070nm - has 4 modes: Peace (10 Hz), Focus (40 Hz), Energy [bloodflow] (20 Hz) and Glow [skin] (0 Hz)
Which would you pick based on the wavelength and price? Have you tried any of these devices? Do you think photo modulation works?