If you were going to choose between Z2, Klasse AIO/SG, or FK 2180 which would you choose if you planned on topping with a carnauba (OCW, Souveran, or P21S)? I use and like Zaino Z2 (still haven't finished yet for Z2 Pro) but also have OCW, P21S, and Souveran and would like to top whichever sealant I apply. Durability is also important since with two small children I don't have too much time to spend on the cars. I've topped Z2 in the past with P21S and OCW with good results but wonder of there's a more "topper friendly" sealant I should be seeking. I welcome any and all opinions- other sealant recommendations are also welcome.