Guide to Multi-blade Main/Tail Rotor heads (450-800 size)

I've had a few people ask where I get my multiblade main/tail rotors for my scale helis. Figured I'd post a complete list here in case anyone is trying to hunt down that missing scale component. If I missed a supplier or part, feel free to add on in the comments.

Rigid:

CopterX and similar heads:
-
-http://www.ehirobo.com/rc-helicopters/flybarless-multi-blades
These can also be found on ebay from time to time and work quite well. They have 3, 4, and 5 blade heads available.

There are also some DFC 3/4 blade heads out there, mostly on Aliexpress or ebay:
-https://www.aliexpress.com/item/2255800967294377.html?spm=2114.1205...

3 Blade Tail Rotor: https://www.aliexpress.com/item/2261799878891086.html?spm=a2g0o.sto...

4 Blade Tail Rotor: https://www.aliexpress.com/item/2261799939652300.html?spm=a2g0o.pro...

Gaui X3 3 blade tail: https://www.anythingheli.com/gaui-complete-cnc-3-blade-tail-rotor-h...

Damped:

Gaui X3 3 Blade head (for 6mm Shaft): http://www.gaui.com.tw/product/%E3%80%903blade%E3%80%91x3l-main-rot...