The Good: Great looking filament, Neptune 4 Max 250mm/s print speed very happy using Elegoo Cura looks great at .2 layer even on smaller models. Could run faster.
ONLY complaint is don't expect to swap in a second spool on the same print which I'll try and explain below.
Tl;DR When I purchased a second spool not long after I purchased the first (a few weeks) March 2025, the color orientation was not the same so a mid print swap did not go as planned using the tri-color. If it helps to understand that visually, think of the order around the filament like a watch face starts at 12 oclock and looking at the filament at 12oclock is red. 4 oclock white, 8 oclock blue in a clockwise pattern. With tri-color if the filament is rotated while printing the color will shift on the print and look terrible depending on the design. An egg for example did not look good mid print color shifted. Back to the explanation: If the plastic is put on the spool at the manufacturer say with blue coming off the spool naturally in the 12 oclock position without you twisting/bending it you will now have blue where red was on the other spool. I tried orienting mine in the head by paying attention to where each color was but the whole batch i think was spun on reverse from the first spool I purchased so i had to start over a 5h print. Looking down from birds eye it was going red,white blue instead of red,blue,white so the red portion of the prints was good but where blue should have been was starting to print white.