depends what u want to spend me and others have used this with no problems i put a pipercross foam filter on the end of it with no problems, i also cut mine down and had it down the side of the battery with a cold air feed onto it http://www.ebay.co.uk/itm/VW-GOLF-MK4-00-04-1-8T-20V-COLD-RAM-AIR-INDUCTION-KIT-/200624888324?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item2eb62cda04
upto you what u go for was emphasizing a cheap but decent kit that quite a few have ??