I had a Samsung 2233RZ, which wasn't all that great. I enjoyed the stereo a lot though but between the games I played I had quite a few issues with depth disparity: outlines and interface being at zero depth. This made many games I wanted to play quite uncomfortable.
The best thing I played, which had me drool at my desk, was Half-Life 2, even though I at first had a zero-depth cross-hair. Just turning it off made things better. Incidentally I played through all of HL2 in VR just a few months after getting my DK1

Such a great experience.
Now I'd love an auto-stereoscopic monitor mostly for looking at stereoscopic photos, videos and screenshots. I haven't looked into it though recently though, not when most display hardware can now be simulated in VR to various degrees of fidelity.