I've decided to go with a manual boost controller... These are what I'm debating between.

1) Hallman ES Kit http://www.boostcontroller.com/index.php?all=yes
2) Hallman pro-kit http://www.boostcontroller.com/index.php?all=yes
3) Turbo XS http://www.kgparts.com/boost_controllers.htm

I like the ES kit b/c it's the cheapest...

Any real difference b/w all these? Besides the home-depot boost controller are there any others that I'm missing?

Thanks.

-Matt