+ 1 on Hercules.
$25 is a smokin' deal, BTW.
FWIW: I prefer the model with the padded legs for my Alembic basses 'cuz that little adjustable T support on the other model can be a little dainty for larger / heavier instruments. Works fine for guitars, tho.
Also, there's some similar clones out there - not sure of the brand - that have the same gravity-controlled clamping mechanism.