I'm embarking on a summer project and have a few questions. I'm planning to build a 3-axis stable platform for electronics. (Picture a flat surface that stays parallel with respect to the ground while the supports for this platform are free to rotate in any axis)

My questions are:

1. Is it better to use 3 1-axis gyros each located on the center of the axis of rotation or 1 3-axis gyro located in the middle of the platform?
2. Could I accurately compensate for gyro drift by using accelerometers and implementing a kalman filter?
3. I need an accurate and fast gyro for this application. I've been looking through a digikey catalog (<http://www.digikey.com/product-search/en/sensors-transducers/gyroscopes/1967243?k=gyro&ColumnSort=1000011&fid=0&pageSize=25>) and was wondering what specs I should look for. Do I want a gyro with high sensitivity (mV/°/s) or high range (°/s)?

Thanks Guys!!