Polar Alignment (I think that is what you're refering to) is not the biggest culprit for a poor blind GOTO. Very often it is the alignment of the base of the mount with respect to the horizon (i.e., north-south and east-west leveling of the mount). You need a mount that knows how to model away that error if the base of the mount itself is not level.
You can tell if it is an east-west leveling problem by doing a blind GOTO to a star east of the Meridian, and then do a blind GOTO to a star west of the meridian (where there is a Meridian flip in between). If the mount is not east-west leveled, you will find that the two plate solved RA errors will have different signs.
Poor blind GOTO can also be caused by a cone error (for example, if your declination dovetail plate is not perfecty orthogonal to the polar (RA) axis). Again, given 5 aligment stars, better mounts can model this error away.
Anyhow, as I mentioned earlier, don't worry about any of this (as long as you don't use the mount for visual astronomy), since you can simply use plate solving to find out (and coreect for) where you are pointed to as long as you have a camera on the OTA.
Just leave the blind GOTO problem to the visual hobbyists.
Chen