Unipivot vs Linear Tracking

I only been using a linear tracking arm for a few months before then I had a silver wired SME 4 and to be honest the Terminator is just in a different class in every department. It has no hiss coming through the carrier
I am now totally convinced that this is the way to go to get the best out of your turntable

A linear tracker is theoretically perfect at tracking whereas with a pivoted arm that is impossible. That ends the whole debate. Whether or not one can hear the minute tracking errors is a whole different debate.  
And it's tiresome reading all the miss information about linear's or more specifically the ET2. It has great bass when set up properly with a proper air supply and it does not require constant fiddling. 

AL, The operative word in your first sentence is "theoretically".  Yes, an SL tonearm is theoretically perfect, but it is never actually perfect, which is one reason why the SL type does not completely dominate the high end of the market. The other major reason, IMO, is the need for a pump, the problems that come with that (noise, moisture in the system, etc, etc), and the problems associated with trying to achieve elusive perfection.  But I would agree that among SL tonearms, the ET2 is clearly a winner, along with a few others.