I really liked Z2 Pro, used it for 10 + years, great look and excellent durability. It was the ZFX that would drop my jaw. The 601/105 on the Daughters car was still there at 14 months although it had regular washings with 932 and the occasional application of Aqua Wax. All the vehicles now have 601/111 but the daughters car is in Minot ND so it is difficult to keep tabs on it. The Wife's van is outside 24/7 and still going strong but it is washed with 932 and the occasional Aqua Wax. Not exactly a fair comparison to Z2 as Zaino does not offer a rinseless or Aqua Wax type product. Doesn't Z8 come close to Aqua Wax?The Duragloss products seem to last about the same as Zaino in my eyes.
Dave