Yes I think you would!
Golf plus 2005, Went from RCD300 to RCD510, now only use SD Card and "touch" radio. It is superb plus much better sound.
As car is 2005 and RCD510 a 2009, had to replace Can Gateway and had to reprogam.
Well worth it.
tip:- (to stop CD Changer "hunting" insert one audio CD).