If I was interested in guided photography and my scope was no bigger than about 8" definately (10" for visual). Unfortunatly viewing with a newt on an eq can be quite literally a pain in the neck. The eyepiece can end up in some really twisted postions. On a platform though, the position of the eyepiece doesn't change and makes viewing much more of a pleasure. Plus you can carry a bigger scope.
Aperture fever is a great thing until you try to put it on an eq mount
