Delta Ara Single Handle Channel Spout Bathroom Faucet with Metal Drain Assembly in Stainless 568LF-SSMPU

We just renovated the master bathroom and used these in brushed nickel for the sinks, they are beautiful both in and not in use. The water flow was too restrictive at first, causing the water to land on the drain, and splash all over you. Per the instructions, there is a small plastic piece about the size of a pencil eraser inside of the faucet, once that was removed the water flowed perfectly, the only down side to not having that piece in is that the volume of water decreases when you go from warm (center) to only hot or cold. Cons - They have been installed for about a month now and you can start to see lines in the channel where the water comes out from water drying in there. the brushed nickel shows water spots and finger smudges, its not as bad as Chrome, but not nearly as good of a finish as was on my old delta brass faucets.

After 6 months, this faucet had developed two patches where the finish has rubbed off. Looks terrible. Have reached out to Delta to see what options are available to us. I can't imagine what the faucets will look like over a year's time.