For what its ment to do, it does quite well.
i've never had any feed problems with it
i found it in my feilds trash can, so i effecticly got it for free. w00t!
If you want blazing feed rate though, don't expect much from this little hopper.
I would recommend this hopper to anyone who dosen't want to waste a lot of paint, or torwards teh end of the day when you don't want to have to lug around a 2LBS hopper.