Another vote for 5-90's cables.
When I replace mine, thats where Iam getting mine.
X2. I think I'm using 4ga or 2ga on the project I'm building right now... forget which.thick, but not 'ima redneck, so ima put wiring meant for power stations' thick
a lot of people like welding wire, its really flexible/cheap if your crimping youre own ends.
personally, i only run a bunch of lights, no winch or refridgerator, so whatever the parts store sells is good for me!
Another 5-90 customer. I could have done it myself but have no regrets, would buy from again.