Ok...I will be blunt and straight to the point..Please bear in mind this is only my opinion...The Spektra Halo leaves the Centri in it's dust..I have had a few Centris, I thought with all the hype attached to this build, it must be pretty good..So I swapped a Hyper V2 for one, and had to send it for repair, so while I waited for that to be returned I got another one...That also had to be sent back for updating/upgrading..Mike at Centri is a cool guy to deal with, his customer service is on par with FKI and TATSoul,,,,,however, I would run one Halo against 3 Centri's.....Maybe I was unlucky, I know some people get great results from the Centri, for me it was too hit or miss, temperamental and inconsistent...It also needed cleaned/serviced ever tattoo, or 3 hours "approx"...I never posted a review on the Centri, as it never worked out for me, it doesn't mean to say it won't work for you...The Centri has a huge learnig curve, and a bit of baggage with it...The Spektra is Plug and Play...Simple...As I said, this is my opinion only, I don't want to create a shitstorm with the Centri owners...