[billdan (Bill)]

When I had an EQ6 I used the static polar alignment procedure built into the EQ6 firmware. This would get me close to be Polar Aligned and then I would fine tune it with PHD2 drift alignment at the meridian and DEC=0.

I think drift alignment is the most accurate, however it is also the slowest method.
Problem being you have to wait for maybe 5 mins to see if the star is drifting N or S. Make an adjustment and then wait another 5 mins' to see if you improved the alignment or made it worse and you have to reverse the adjustment made.
If you are permanently setup in an Obs, I would suggest spend the time (1 hour) to get an accurate drift alignment. Then check once per month to see if it is still OK.

If your mount has poor backlash in DEC (like my EQ6 had) then it can be worthwhile to deliberately mis-align your P.A so the stars always drift in one direction (N or S). This way DEC corrections are always in one direction and less chance of the DEC motor having to go into reverse.