Thanks to all and in particular to markmcir. A direct comparison is really helpful I am not a big fan of having a large quiver but I think I may go for 3 kites. Zephyr &12m & 9m C4. Although, by adding an 8m2 C4 for 2011, Ozone has made my life more tricky (such a luxury problem, snifff...). So,will...