I have a Pendle, but don't use it on the Golf. When I bought it, it was the only option if you're going to carry heavy bikes - mine has been used in the past to lug 3 heavy full-suspension downhill bikes (about 60kg in total) around the Alps, and at speeds up to 120mph without bother.
Mine is a "behind the ball type", but a friend has a "tow ball" type, and that's just as good (obviously useless if you want to tow and carry bikes).
I bought mine in 2003 2nd-hand for £10 on eBay (probably not much help!), but they are about £90 these days I believe.
http://www.pendle-bike.co.uk/As for the towbar, I've got a Westfalia removable item and the lower bumper section with the removable panel. It's dead easy to fit. I bought mine from Norbrook Trailers.