Recently posted this, so here you are.........
Check out Forge Motorsport for their Twintake, reviewed on the forum by RR (dated 2009)
Click hereOr the ITG Maxogen, reviewed by the Boss man (SteveP) (dated 2009)
Click hereOr the Volant system, new (ish) system from the US of A (dated 2012)
Click hereThe REVO CAI is one of the best, no review on here, but here's a link to their site....
Click hereThe APR one is also the VWR one IIRC. Their info....
Click hereAnd an old thread about Panel Filters (dated 2009)
Click hereVery useful Info on all the above, via forum member john_o (dated 2009)
Click hereAnd that "how to" on modified engine cover..
Click herePrice wise, EVOMS is about £300. Forge, APR/VWR, ITG and REVO CAI's are all around £400+ and a decent panel filter is £30+.
Personally I'd go with the REVO one.