Bruce, I have a friend in Vienna who just got the Alexias. He loves them and thinks they are a major improvement over his old Sashas. He also uses the XS 150s and told me they really are a great combination. However, they get really, really warm, which is fine in the Winter. But now that Spring has arrived, he plans to switch back to his XA100.5. He has not tried this combination yet, so I don't know what he will report. Seems like you two are on the same path. And what a path that is.