Hi Guys
I own the F5 version of this scope and it is also a brilliant performer.
I would recommend the the F5 on the basis it is a good balance between visual and astrophotography.
My only Cons with the F5, I can only reach focus with a DSLR directly connected with a 2" adapter and then there isnt much forward focus.
Planets will require a 2 inch eyepiece to be photographed such as the Baader.
Hope this helps for the undecided.