why do you guy's like a turbo vs a centrif Supcharger?

Could someone do both or an I retarded?

It's called twin-charged, been happening for quite sometime, extremely expensive however. Not really aware of any kits available for it, meaning it requires some very pricey complex 1off parts.

[ame="http://www.youtube.com/watch?v=rd4XA8czlks"]Twin-Charged Ogura Clutch Fairlady-Z / 350Z (Z33) - YouTube[/ame]