And the lower magnification might even show low contrast details on Jupiter
better than the higher magnification does..

When we were in the Keys 2 years ago, 350x was ideal on Jupiter with my 10"
Mak-Cass, but seeing detail on Gannymede was impossible until we reached powers
of 600x to 900x. At 900x, subtle detail stood out during moments of excellent
seeing on Gannymede, but most surface detail on Jupiter itself was much less
pleasing.

There is no one power that works for every object. That's why Uncle Al makes a
gazillion eyepieces, and you all ought to buy one of each (two if y'all have a
binoviewer - er, a Baader bino if'n ya want t' see the sharpest detail).

Rolando
aka Uncarollo