It was just a year ago when I went A5 hunting after reading so much raving reviews on it.
I went into a shop to audition it and to be honest, I was pretty upset from what I was hearing from the A5. Pretty much an overwhelming amount of loose bass. Nothing spectacular. Dynamics, clarity, soundstage and etc are just so so. It is something which I could decide that it was not what I was looking for.
That shop also sells Aktimate Mini which I went on to audition just for fun since I was already there and had dropped off the idea of purchasing the A5. Under the same acoustic environment and using the same source, I was immediately captivated by what I was hearing from the Aktimate Minis. I have never thought that an active speaker at this price range could sound so good. It sounds a little warm and the mids is sweet. It is not bright at all and the bass is tight and just nice. The detail and soundstage is superb and even with bad positioning of the speakers, it still sounds very good.
I could easily live without a headphone with this speaker around and since my budget only allowed me to get an A5, I sold my HD600 back then to fund the Minis.
It has been a year since I have owned it and it is still one of the equipment that I love the most. With a good source and some minor tweaks here and there, I much prefer them to many other high end portable/desktop rigs that I have tried.
I can't speak for other speakers but given the SQ and the aesthetic beauty of the Minis, I won't be looking for another speaker anytime soon.