Schmidt Newt vs SCT's

What are the biggest advantages/disadvantages between Schmidt Newts and Schmidt Cass's? Assuming the same aperature, say 10". My understanding is that an f/4 vs f/10 won't matter unless your doing photography right? Any big visual differences?

Thinking of upgrading my 8" SCT to a 10"

Thanks

Depends on context and your goals or needs for the optic. At a given magnification -- all other system parameters being "comparable" (they couldn't be equal), axial fidelity would likewise be comparable. Potential field of view, on the other hand, is another context (advantage: the f/4 system). Field curvature would be yet another context, as would photographic "speed," coma, and other optical/visual parameters.

The biggest visual difference between f/4 and f/10 would be potential field.

Cheers & best wishes.
-Dan