I'm completely learning too... In my reading I realised as well that Glocks weren't as heavy (to start out with) and that may make them a little twitchy. I also started discovering things like Brass Magwells, and Tungsten extended length guiderods. I wonder how close one would be to a 2011 open gun in terms of weight and/or ballance at that point?
For me, trigger was the only hold out. For $1600 vs. $3300 (cheapest for me up here in Canada) I will put a 2# completely adjustable glock trigger kit in and see how it works.