With my trendnet, from the main viewing page I was able to set and/or change the preset positions, as I often had to do if someone bumped the camera or it got moved etc. With the Dlink I have to go to the camera control tab in the setup menu to set the preset positions, then back to the viewing page to use them.
Just an annoyance, as are the other points, but enough of an annoyance I may be swayed towards Trendnet for my 2nd cam I want to put in place.