What size are you expecting to see when you look through your scope?
Why the concern with visual size at that magnification?
The visual size you see will be the same in any scope if you compare at the
same magnifications. The only differences seen will be resolution and colour
corresponding to the different scope sizes.
Todd
http://www.backyardastronomy.com
http://www.skynewsmagazine.com
http://www.simpleastrophotography.com