First the positives.  These are beautiful lamps that work perfectly.  I have installed them into my bedroom and they look great.
The stems are very responsive and the slightest touch will light up your bedroom without any fiddling for light switches, so that is good.
The bad news is that the bases were poorly assembled.  The underside of the lamp is closed off with a flexible plastic disc that conceals the inner components.  These components are a little too big for the base and the disc bends and this means that there was a bulge in the bottom of the lamp that prevents it from standing steadily on the tabletop.  In my case, I needed to tear open both bases, adjust the wiring within and pop the disc back.  This was a simple adjustment and worked well but it was somewhat destructive and really should have been picked up in quality control.