I love these bottles. I recently started juicing nearly every day and I needed something that was both handy and sturdy enough. Plastic was out of the question as the veggies I am juicing would stain them. These glasses are easy to clean and come with a little brush cleaner, though I eventually broke down and bought a better one with a longer handle.
The lids are stainless steel and have a stopper in them so you can shake the contents to mix it often and they never link.
While there are some slight imperfections in the glass, it doesn't concern me at all. They are well made and solid.