Which power adder would yield best gains?

[[syko.xero]]

Hey guys! I own a 2005 Machine Silver Corvette C6 and am about ready to start modding. I want to make as much power as possible with stock displacement and the stock bottom end that runs on 93 octane and provides daily drivability with a strong power curve (everywhere). The car will be auto-x'd, tracked, and drag raced occasionally, but will be more for a daily driver. I am hoping for 500+ rwhp and want to know which of the following three power adders you think would be the best overall:

1. ATI HO Intercooled Procharger @ 7 psi
http://www.tbyrnemotorsports.com/c6catalog.html

2. Magnuson Supercharger @ 7 psi
http://www.tbyrnemotorsports.com/c6catalog.html

3. Cartek Stage 3x Head/Cam package
http://www.cartek.net/parts/headsand...agesmain.html#

[KCMAGS]

I can only comment on one. I've had zero regrets.

[Z06-Dave]

For the best looks get the Maggie
For the most power, the Procharger
For autocross you want the instant HP of a H/C package

Do you have an auto? Superchargers are better for automatics since you'll never lose boost.

Too many questions to give a good answer. Personal choice.
Whichever you choose, never look back......

Dave