One will probably be "with foglight holes" and one without. You'll need to ask GSF I guess??
I've just bought a similar big bumper from ECP and I would describe the quality as "okay". The fit is alright, they seem well made, but one or tiny blemishes of "brown" are already visible.
At the end of the day, the VW version is over £200, so I guess you get what you pay for.
EDIT: Golf8v beat me to it...
