I actually use the new paint station from Games Workshop, and I rather like it. It's quite stable when you put it on your lap, mainly because it's sculpted to "wrap" around your legs, instead of being flat on the underside. Of course, if your preferred method of stabilizing your hands when painting is to rest your elbows on a high table, then the paint station is no better than the old one, or the new ones from Warlord Games.
If, however, you usually paint in a comfy chair, like me, and stabilize your hands by pressing your wrist together and/or on the arms of your chair, then the paint station does it's job admirably. It's stable, lightweight, and opposed to the old station actually fit inside normal cupboards.