For everyone who wishes to invest in top-quality equipment, the Heil Sound PL-2T is arguably your best bet.
The whole microphone arm is of great quality – it is sturdy, quite fixed when mounted, and in no way will drift up and down when let go.
It is made of two segments connected by the “elbow”, and each segment is 19-inch long. No matter how big your desk is, the microphone will be positioned wherever you want.
Also, mounting it is incredibly easy – simply bite the desk edge with a clamp and that’s it! Additionally, you will have all the current desk space available since this microphone arm does not go on top.
Oh, one more thing – the cord goes alongside the arm and is therefore hidden from sight.