the Ed 30 one does look very cool for the nostalgia factor, but i don't think the standard knob looks that cheap either
You know it, I know it, they know it, VW know it .... one is a lump of plastic, albeit a beautiful one, but the Ed30 one has a machined and hand made appearance and feel to it. A Breitling vs a Seconda. Nes pas? Acceptance of superiority is sometimes very difficult but understandable.
PS: The standard GTi gear knob is probably the second best one in the VW catalogue. 
It's an unconvincing argument...and one I'm not buying.
If you want to change, change to one that at least tries to be faithful to the original Mk1 gear knob, but with a modern twist...not that half arsed effort, over-styled, pimp-tastic effort.
Pick one that actually feels like it was designed to shift gears, rather than look good in a car parked outside some poncy winebar.
Get a 25th Anniversary one:

20th Anniversary one the same, but marked for 5 speed.