Review (4/5): Start Hunting Around!
Guys, the proper 360 Complete replacement cutters clearly says, "8000 Series" boldly on the package. Also the package will say "100% Performance" in a red tab at the upper right corner of the pack. These ARE the hard-to-find, Gillette replacements. With some legwork - NOS can still be found. Be aware the thin coiled cutter performs well ONLY when using the CCR cleaning system daily. After that, they start painfully tugging whiskers.
Don't get the replacement foils with the terrible Honeycomb mesh pattern. The OEM Braun SmartFoil has a unique and effective, "flower" design, which scoops-up lying hairs and whiskers that sprout from odd directions.