The quality of aftermarket brake parts varies widely, and it can become complicated by choosing to change the type of pad you use.
There is no absolute answer to your question.
For tranny and coolant fluids I prefer the manufacturer fluids, just because the wrong fluids can cause expensive damage.
For spark plugs, I like to choose one of my vehicle manufacturer’s OEM suppliers. But even then, if I go to a parts store unarmed and ask for only NGK or Nippon-Denso plugs they’ll offer me a choice of copper-core, platinum, or iridium. I prefer iridium plugs for all applications for cars built within the past 15 years, even though many originally came with platinum. No manufacturer uses copper core anymore.
I use the brightest headlight bulbs available for my application. I believe they’re called “Daystar” or something like that. They’re expensive, but IMHO they truly do put out more light.
For body parts, including lighting modules, switches, etc., I’ll order the cheapest aftermarket replacements. I’ve only been disappointed once, by a really really cheezey headlight module.
For wheels, the choices are countless. Even for OEM replacement wheels, you can buy refurbished wheels, aftermarket duplicates, or OEM. I’ve never been disappointed by an aftermarket duplicate.
For glass, it’s PPG all the way.
For engine parts, exhaust parts, cooling system parts, and drivetrain parts I go mostly aftermarket. I’ve very rarely been disappointed. For wheel bearings, I prefer Timken if I can get them for the application. For shocks & struts, Monroe is good, as are many other aftermarket parts. For belts, I go with Gates… and even then there are different grades.
There are countless parts in a car, and countless options for each.