hey,
there are pro's and cons on pod filters and if you run a search you'll find heaps on it.
youll find a test link too that shows four pod filters' performances. HKS brought power gains but lacked good air filtration
If i were you id go for the pod filter, only if you have some sort of heat shielding around it, with a cold air feed.
Just got myself an apexi power intake but i dont see much power gain - still need the add a heat shield + cold air feed.
Or if you can get urself a new airbox, grab a hi-flow panel filter (e.g. K&N) and run a cold air feed into it.
ive read somewhere that "the standard airbox is quite restrictive."
and it goes on and on and on. just do a search
my 2 and a half cents.