Personally I don't like the Astir - I find it's handling poor and it is finicky on the speed side on approach and landing. That said, it penetrates well and the view is good...............
ASW15 is a nice aeroplane and handles well...............
Libelle is a bit of a handful all round - not sure I'd go there...........
As previously said - none of them are going to be beauty queens for the sort of money you are paying............
K6e - great alround aeroplane for your silver C, easy to rig and nice to fly.
SF27 - nice aeroplane, easy to rig, nice to fly, I seem to remember they had a lift off canopy which can be a pain...............terrifically well engineered through.............
For my money I always buy Scheicher though............ so ASW15 if you want glass or K6e if you are not fussed
Arc