We recently needed some simple bedside lamps for a project we're doing, and after lots of searching decided on these Retro Modern Lamp Bases from Urban Outfitters. Their simple but graceful shape is definitely mid-century, but not in a way that seems kitschy or too retro.
The best part? They came in way under budget, yet manage not to look cheap at all, even in person.
$36 each (doesn't include shade) from Urban Outfitters.