There are no real
major differences in the two. They are both SRI's. The only difference really would be K&N uses an Oiled filter, where as the Takeda I believe uses a Dry filter.
For the price of either, an SRI for this motor is not wise for HP gains...
If you're going for PURE LOOKS, then I would also throw in the R2C intakes. I've seen them and they look really cool. Plus you have options on the pipe coating/color as well.