The g22 is the lighest head currently made and on the market.
The x3 is basically the same thing as the g22 but a lil more solid and geared towards defense/middie
The Kannon is more geared towards attackman and is prone to warping
The k18 is kyle harrisons stick and geared more towards a middie
Ive had a kannon and a x3, the kannon warped while the x3 is in great condition, id reccomend the x3 or g22