Hi Aust!
My personal preference would be the Vivid Collection, the ND8/PL and the ND16/PL will be perfect for your mid day over water shots and give your photos and videos nice saturated color. The ND4/PL will be great for sunrises/sunsets. The polarizers require you to set the polarization orientation before each flight which can take 15 to 20 seconds, personally I think the glare reduction and the increased color saturation is worth the extra effort.
Maybe some other people can comment on their personal preferences as well.
Let me know if you have any questions!
If you order from our site shoot me your order number and I can send a free Lens Cover:
Jeff.overall@Polarprofilters.com
Jeff