Halo Paintball (owned by KEE Action Sports) announced its discontinuing their line of mid price TSA HALO Hoppers.  The TSA Hoppers ranged form $40-70 depending on their LED or LCD display.  They were offered in 2 body styles a “Frontman” which held around 140rds and a “Backman” hopper which held around 180 balls. Its “gimmick” was that the TSA had a tilt sensor inside which sensed which way you were tilting the hopper.  Depending on the tilt, the impeller would adjust its spin rotation clockwise or counter clock wise to make sure paintballs were being feed into the gun.  Personally I always thought theres hoppers were cheaply made and over rated for the price.  You could do a lot better with a View Loader style Paintball Hopper.