I have a set of Tein coilovers in my corolla, although i cannot compare them to Cusco's, D2's of G4's, in my opinion they are a very good coilover. They have the ability to be very very tight and very sturdy and gives you the choice to have any ride hight desired, my only problems are they can be bouncy and uncomfortable on bad roads. The front seats are ok, but my passangers fight for the front seat because the rear ones are very painful. Then again i bought them for a specific purpose and for myself not my passangers. I also choose Teins because they are locally distributed (e.g. Fulfrum Suspension) and offer services to rebuild the coilovers, where as this is not available for Cusco's. On another note, $3000 for Cusco's Zero2's is to expensive, i was quoted between $2200-2400. As for Teins they are around the $1700-1800 mark.