Which ND filter?

[Deluxe1]

New to photography and would like my first ND filter for water shots but unsure which to go for?

This is the one I'm looking at but not sure which one to go for, maybe a 4 stop then I can always get a higher one at a later date?

http://www.amazon.co.uk/dp/B00HF6HB...lid=28WERM4692K00&coliid=I2ENAK8T1IYPDT&psc=1

Anything better for the price?

Thanks.

 

[Hunders]

I'd recommend Haida filters.

 

[Columbo]

Camdiox or Haida.
Basically B&W quality for a fraction of the cost.