Dual-Extruders, are they worth it?

[Mjolinor]

Single head printers are slightly better quality due to reduced mass on the major moving part. Less ringing on corners.

I'm not sure that should change your mind about things, it really isn't that big a deal but nevertheless it is true.

[Davo]

Single head printers are slightly better quality due to reduced mass on the major moving part. Less ringing on corners.

I'm not sure that should change your mind about things, it really isn't that big a deal but nevertheless it is true.

Only if you don't compensate with a lower print speed.

Higher mass does not equal poor prints. Highter mass equals a greater chance for poor prints if you don't use a speed appropriate to your mass and acceleration.