I have bought a godox Ad400 and Ad200 lights for both indoor and outdoor photography. I want to buy nice softbox now like Glow Ez Lock sold by Adorama (shipping is expensive than the product).
There are options from Godox like 90PL or 120PL or the local shop selling X1pro softboxes..
to many options out there.
I've always thought softboxes are something you can go ultra cheap on without losing any quality although obviously hanging a sheet looks awful to anyone watching you work.
So I'd be looking at the cheapest or next cheapest on eBay, Amazon and Aliexpress.
I'm going to make my next softboxes out of wire, mylar and sheets although I don't care how it looks.