As always buy the glider with the best trailer. I would not rule out the Ventus. I have flown the ASW20 and the Ventus. I found them both to be similar. I would not buy either unless they have winglets. The Ventus b had automatic hookups, where the 20a may have manual hookups, especially on the elevator.

The LS3 has heavy wings, and significantly lower performance than either the Ventus or 20, especially at higher speeds.

In the 2nd generation gliders I would likely pick:
1. Ventus with winglets
2. Discus
3. ASW20 with winglets
4. LS4
5. LS3a