I use K&N cone filters. They are all pretty much the same for me though.... I guess if I came across a good deal on either of the other two and I needed one at the time, I'd buy it.
As long as you arent doing stock style performance replacement filters in a stock air box. Most paper filters flow more air than a stock air box will anyways. I love that misleading parts store K&N demonstrator.
Any of you guys with access to a flow bench, this is always a fun test. Try a stock air box with a stock paper filter, then a stock air box with a stock style performance filter, then the stock air box empty. Air flow will be nearly identical each time. 30in^2 paper filter > 2 inch diameter hole.
2002 SLE Dark Polo Green Metallic