Moundhill, I have the TR Alpha V5.  I'll try to get a pic up of it on my bow.  I loved the verticle pins from the first time I looked at them.  I'm not sure why they would be any more flimsy than horizontal pins, but I'm still a novice.  I love the site picture and I have not needed to adjust my sight in over a year.  So for now, it's good enough for me.