Best air filter?

[freekinfreak]

I just bought this air intake tube off ebay http://cgi.ebay.com/ebaymotors/ws/eB...477244194&rd=1

I know, I know, but I got it for $6.What the hell, I'll review it.Anyways, although the tube may be el cheapo, I want to know what the best filter out there is, besides K&N.Are foam filters any better? I actually hear good things about the Ractive air filters. Anyone ever use these?
I'm skeptical about buying a cheap filter, since it does serve an important role in performance and actual engine life. Any replies are much appreciated.Thx.

[Ace$nyper]

K&N is one of the best out there great flow good cleaning
HKS good flow poor filtering

There was a post about this in the streetracing forums *not H/A racing* and K&N was best bang for buck think Blitz made 1more HP but was like 40 more.

[SiGNAL748]

apexi makes a BAD ASS FILTER

..that is if money isn't an issue.