I agree with Andy and think that these would be a good scope , and at f9.4 the aberration,s would be well controlled and would work well with basic Plossl,s and the like .
The 5inch class scopes seem to be overlooked mostly as people like to go to the 6inch classes but the jump from 4 to 5 inches is very profound , shame really as they look like a good scope. .
I would say if these perform anything like my iStar 127 f8 you will really like it , mine performs brilliantly on all objects.
You thinking of getting one. ? ,I don't think you will do wrong for the price , look forward to a review if you do
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Brian.