I know this has become an old thread but I have just finished installing all the equipment and I am about tune it all up.
In the end I went with the Morel Hybrid Ovation's and they were a total ball ache to fit. I do not recommend them if you are looking for a straight forward replacement in an E92 because they are not a drop in replacement.
I do however recommend the speakers I am really pleased from the little I have heard from them I will give my opinion after I have tuned them up.
I will post on here how I finally got them in the car later