In terms of Ergotron LX, it is well designed, robust, manageable, adjustable in all axes, look no further.
A good compromise if you hesitate between a cintiq 22 or 24. With ergotron cintiq 22 and you increase your ease of use significantly. Note that each axis of the arm can be locked, so no worries for big nags like me, the cintiq will not go for a walk at work.
In short very disappointed to Amazon regarding the dismal delivery. But very happy Ergotron!