Great bass from a linear tracking arm?

To continue on Rushton's remark:

"design of the arm (e.g., bearing rigidity) has a huge impact."

The Walker, the (now defunct) Maplenoll, which I own, and the Kuzma are all very high air pressure designs although the Kuzma's bearing is much shorter. The ET runs on about one tenth the pressure and is consequently not nearly as stiff. Although it's impossible to do a direct comparison of an ET arm to a Walker or Maplenoll given that the former are both integrated tables, I imagine that this stiffness has a huge effect on everything including the bass reponse.

I know that if I reduce the pressure to my Maplenoll arm, tonality suffers noticably.

I just talked to Mr. Kuzma at CES and he is just now offering the ZYX cartridge line under his own name, without any changes to the cartridges or the prices.