Fluval 13.5 silent pump

[BurgerFish]

Is there any really silent pump for Fluval 13.5?

I tried:
Eheim CompactON 1000 - noisy, heat the tank
Sicce Syncra 0.5 - doesn't fit well, very noisy
Cobalt MJ900 - noisy
Stock pump - more silent, but not perfect

All the noise come from the vibration of the pump touching the tank wall. Is there any pump that fits Fluval 13.5 without touching any side walls?

 

[blaxsun]

The stock pump on the Fluval Evo 13.5 at my LFS is whisper quiet. Maybe it just needs to be wiggled around a bit to ensure it's not touching the sides?

 

[BurgerFish]

Any idea is DCA1200 will fit?