The best type of wiring depends on what you're using it on. For quantity over quality pick aluminum. For quality pick copper.
is it unsafe is it to mix aluminum and copper wire? : r
Buying a House with Aluminum Wiring
Cable and Wire Size Calculator - Copper and Aluminum
The Inspectors Blog - Craftsman Home Inspections llc
How does my aluminum to copper pigtail work look? : r/AskElectricians
Construction Materials: Copper Versus Aluminum Wire
Romex Wire A Safer Alternative to Knob and Tube and Aluminum Wiring
Is Aluminum Wire Safe? - If You Have Aluminum Wiring - Replace it!
Aluminum Vs. Copper Wiring: What You Need to Know
copper wiring Markham Metals - Steel & Aluminum
Aluminum Wire as an Electrical Conductor, Aluminum Wire Bob Martin Co
Why Is Aluminum Wiring An Issue In Homes? - Scott Home Inspection
Hazards with aluminum wiring - Structure Tech Home Inspections
Copper vs Aluminium Wiring: Which Is Best?
4 Benefits To Replacing Your Old Aluminum Wiring With Copper