Paxton supercharger

Thanks,
I have that article and have read it several times.
Procharger is about $7500.00 vs $4000 for Paxton
The Paxton is more affordable but going back 10 years had terrible reviews with quality and service?
Paxton was bought out by Vortech and it looks like its a different company with its act together!! Paxton answers my Emails and are responsive on the phone. I am just looking for a little more assurance.
I know I could get a 6-71 roots working but the centrigigul works better for my application.Roots generates to much heat for roade racing. Just don't know much about the Centrifigul blowers? I'm learning