Thislop

Which companies make the best (trustworthy) psus because I'm looking into getting an rtx 3070 soon but I only have a 500 watt power supply, and i'm looking to upgrade to somewhere around the 700w range and I'm new to pc building so I don't know too much about which companies are the best for some products like psus. Plus i'd rather get a psu that doesn't immediately kill my entire pc.