The Schmidt Newtonian is a very fast scope and as such I have found because of its quite large central obstruction not very suitable for planetary obs. It is a light bucket though and when collimated correctly is very good at deep sky stuff. Now collimation on this scope, mine is an F4 is critical and can be a pain in the bum. It also, obviously is a very short focal length for the aperture, my sn10 FL is 1000mm so image scale is quite small compared to the 2.5m focal length of the equivalent LX200 10" sct. They also tend to be a little unwieldy and you have problems with corrector plate dewing up, hence a dew shield and or dew zapper is important.