I had both in my living room at the same time to compare, I would sell the speaker that lost the shootout. I first had the Aerial 10T (which replaced B/W 801 mk3), then later replaced them with the Dunlavy 4's (second version). The 10T's had a 'gutsier' bass, but over all I preferred the 4's sound, especially for jazz and vocals.
The Dunlavys give you more definition vs Aerial's volume.
That said, I am currently using Maggie 3.6R's.