I have a lens aligh, but it now stays packed away in its box. I was a early adopter of Reikan FoCal Pro, its automated for my 5D MK II (semi automated for 5D MK III and 1D X).
Its by far the easiest and most accurate, since it does not require you to make a guess at the sharpest image.
It does require that you print out a target and mount it to a flat surface. Once you have it setup, the only thing is to be careful not to vibrate the camera while its shooting, and have enough light so the AF system can be at its most accurate and have the least variation.