Do you mean fans?
If you are after performance only, there are many silly options such as industrial high RPM fans. They would be on the order of $25-30 per fan.
I don't see those as helping all that much with a closed off front panel. If you want to prioritize performance over aesthetics, then you'll want a case with a mesh front, or at least more airflow direct to the intake fans.
You could swap out for some static pressure fans. They are designed to work through obstructions, but overall provide less airflow over distance. Any number of brands to choose from there. EK Vardar, Noctua, Corsair SP, (I believe Sharkoon is known for one of their radiator fans), NZXT, Fractal Design.
And then there is the whole RGB thing if you want to...