I have GSF ones and although they are strong, they also know how to rust as the paint finish on them is extremely poor. If you get GSF, it's well worth scraping off the black paint, (yup, it comes off that easily!) and then, using good quality primer and paint, doing them yourself. You have a red car as I do, so you can colour code them to your doors. Does not always work with lighter coloured cars. The darker the car colour, the better it looks. Red cars only just get away with it.
