GSF items do also fit well, but you have to make sure you get the proper big bumper wing brackets, these are normally the cause of poor fitting bumpers.
Genuine are better though for sure

I've also seen pics of aftermarkey bumper brackets that were severly corroded after only a short time, check out matey-mateys site!
The front bumper may not be an area you want to compromise on also, since the bumper mountings also hold the front engine subframe in!