My current Maruman set comes with a driver, 4W, hybrid M4, and irons 5-9 (and PW, SW and putter). My question is more on the longer clubs. I am missing and usual 3i, 4i and 3W. So with my current configuration, am I missing out on some particular distances? Do I still get 10yd differences moving from driver to 4W to M4 to 5i? I wonder if it would be a good idea to get a 3W and/or a 3i??