Why did you buy your mk4? I bought mine after test driving one at a second hand car place when I was looking for a Ford Focus. The Focus I drove that day was dodgy so i thought I'd try the Golf and quite liked it. I think the interior impressed me the most.
But, Focuses are cheaper and very good to drive. I probably should have bought one, it would have been the more sensible buy, but I have never liked their styling much.