What Kind of Powerhead should I buy?

[Eb0la11]

Hey guys,

so I'm getting close to buying a new deluxe powerhead or powerhead system. I am planning on spending like 400 bucks on something to increase my flow as its only probably like maybe 20x. I might sell my three koralia 4s for a new system, I havent decided yet.

What kind of system would you guys put in if you had the choice? Give me some options to research!