They are all terrible. The best consumer option today is Sony’s 720p OLED HMZ-T1.
It has a small image, inaccurate color, poor gradation, suffers from crosstalk (interference, not 3D) has a grid over the entire image (pixel pitch is too low) terrible optics (distortion & chromatic aberration) and is very heavy & uncomfortable. It's fairly low contrast, suffers from internal reflections, and is high latency. (50ms)
That being said, motion handling is good, and it offers the best 3D experience I have ever seen by a long shot. No active/passive/other 3D displays offer anything like it. With one display for each eye there's no ghosting (“crosstalk”) and the 3D image looks completely natural. While the hardware itself was uncomfortable to use, the 3D image was comfortable to look at for hours, unlike any other 3D presentation I’ve seen.
I have been down on 3D ever since owning a first-generation set, and trying out a large number of displays that have come out since, but the HMZ-T1 was enough to convince me that there is potential for 3D, and a good reason to push forward with advancing 3D technology.
We just aren’t there yet though.
Apparently there's going to be a replacement for the HMZ-T1 at the end of the year, so hopefully they've paid a lot of attention to the ergonomics this time around.