never used ether of those brands.
But different brands will perform differently.

In general you won't need to change settings much.

I've just switched from red flashforge (my current favourite filament) to yousu black to print some car parts. I know they both work with the same settings. But for other brands or colours I might have changed a few things.

Flashforge pla is amazing stuff - thoroughly recommended. The yousu stuff is also pretty good.

I haven't had any 'bad' filament for a couple of years now.
The industry seesm to have standardised on the manufacturing equipment, so you don't tend to get diameter variations (I hold my hand up, I have never bothered to adjust for diameter variance, never). Some brands of pla might still produce a little warp, but on the whole even the really cheap no brand stuff from ebay, is pretty good.