Any will work fine, it's all up to which one you like the most.
The K&N system is suposed to give you a couple more hp because of it's non-metal inlet tube which does get nearly as hot as the metal ones, reducing air temps a bit. Good luck!
The best, but the most expensive is the AFM PowerPipe with an 80mm MAF. I run my car in the heat of summer and the metal inlet tube is still cold to the touch. The PowerPipe looks great I think!