Hi guys, i have a question here. Regarding ND filters.

Have you heard about Big stoppers ND filter? Such as ND1000. It can be used to reduce the light going to sensor and increase exposure time

My question is this. I'm looking for one big stopper ND.
I would use it for landscape photography (sunrise, waterfalls, noon time). I notice there's also ND4000 and ND32000. Is ND1000 enough and practical already for those applications?

Thanks in advance.