I haven't followed AER closely. It is trading below book value and should be a decent buy. Right now, I would guess that its location in The Netherlands is not a positive indicator. Since it doesn't pay a dividend (just like AAWW), buying would be for capital gains only. Is it better than AAWW or about the same? The FBR conference suggests AAWW will reach a $70 share price within a year; that may be wishful thinking though.
I have been buying AAWW low and selling high; i.e., trading over the course of weeks to months because it has wild swings.