I'm giving up gelatin square filters for bayonet mount and I'm about to make some purchases.
Looking at the prices of the ND, it sure differs a lot for multi coated and non-MC..

The usage for the ND would be for waterfall or "really slowed down" shots to get motion trails..
Not very oftenly used as I have my CPL to double as ND most of the time.

Is it worth getting a multi coated one (MRC, S-HMC, HMC, DMC... etc.)?