Upload & Sell: Off
The setups for shooting shiny stuff like this can vary wildly depending on what look the
client wants. FWIW, you probably need to sit down with them and design the images/agree on what they want prior to deciding on what equipment you need to achieve their needs.
That said, I've been making do with a number of Buff products (x3200, x800, ab400) - they're OK, but their color consistency isn't the best (maybe the einsteins are better - I haven't tried them), and I find that their output intensity jumps around a little bit due to
various factors. - on the other hand, I can usually get what the client wants
out of them, and the lower cost is always good when you're squeezing your camera
FWIW, If your ceiling is low enough/is solid, I find autopoles to be the way to go to hold
up backgrounds - they take up no floorspace, are Really Hard to knock over, and are
incredibly versatile - During the financial crisis I was fortunate enough to pick up a bunch of these along with superclamps, clips, etc. from various store closings on the cheap. I've got
a couple of those background stands like the ones you posted the
pointer to, but now pretty much always just use the horizontal poles out of them...