Opinion on universal wiring harness

I paid under $100 for a nice 20 circuit hot rod kit and made the investment from Amazon a good heat gun and bought a bunch of their solder filled butt connectors.. it was nice having every connection soldered and shrink wrapped quickly and nicely.... Also eliminating that ugly bulkhead under the hood and being able to tuck my wires...
Also found that tucking everything in a wire loom holder made for neet tidy work..

I even got some Amazon 30 amp relays with fuses and hung them from the battery tray for the headlight and fan relays...
One hell of a time consuming but I'm very meticulous...