Difference between ADXRS450, ADXRS810, and ADXRS453?

I am looking for a very accurate gyro for a robotics application and came across the ADXRS450, ADXRS810, and ADXRS453. They all appear to have the same specifications, but are rated for medical, automotive, and high vibration settings. What are the differences in the actual function (if any)? Are the more expensive medical and high-vibration versions simply better tested? The high-vibration version seems to have 1*/sec/g drift compared to 3*/sec/g for the other two, but is that the only difference?