This version of FilaPrint's black PLA is the best I have used to date. I am able to print at 60-80mm/s on an unmodified K8200 printer with heated bed using 4:1 water/PVA base with no warping on 150mm square parts.
Layer heights from 100nm to 3000nm are easily achieved with my preference at 200nm with a 250nm first layer. Levelling is critical, as is initial extruder height.
Printing temperature is ideal at 210 degrees, with excellent interlayer adhesion; lower temperatures (190) can produce weakness and first layer problems with low adhesion. Retraction is set at 2mm, giving clean models with little or no stringing. I am using the stock hot end (0.5mm) and partial fan cooling of the heat break and I have yet to experience any issues.
Filament dimensions are good with about 3% variation, mostly oval, and I use a 5% excess extrusion setting for my printer. I can't be bothered to keep changing the firmware setting for extrusion!
I am about to try the white PLA and will comment when the project is completed.
To date I have used several reels of the earlier Black and Silver PLA with varying results but latterly with no issues printing on Kapton tape with PVA mix base coat and similar settings but temperature of 195 degrees. I have reverted to the plain bed for the new PLA and a bed temperature of 50 degrees, although a cold bed works OK provided the PVA mix is dry.
All my models are produced using SolidWorks and now sliced with Cura, although I am less happy with the finish when compared with Slic3r but the latter has problems with starting corners on infill with under-extrusion. Most of my models are engineering applications requiring precision and repeatability along with ease of assembly and adjustment. PLA suits well other than its low Tg temperature but its toughness and basic machinability suit me fine.