I think you first have to decide whether you want copper core or the carbon- fiber core (sorry, don't know what it is really called).
I use the copper because the 4-cylinder dizzy caps use a penetrating screw than the copper makes good, reliable contact with. Teamed with non-resistor plugs you can listen to your engine on the radio (and little else) but who cares.
I buy a 'Universal' wire set for a V-8 (the universal sets seem to be the same price whether 4, 6 or 8 cyl) and make as many sets as I can. I think (using some leftover connectors and boots) I got 4 TR3/4 sets from one box.