I own the 802D3 and the DB2D.
The DB2D is soooo awesome! It is so great! It goes down very deep. All i can say: Buy it first.
There's an app from B&W. You'll control the Sub with that app. The profiles for the D3- and D2- and 70xS2-Line are integrated.
Haven't heard the 805 nor 803D3s. But the whole Nautilus-Line and the 802D3 and 800D3. Had the N802 (and N804 and N805) before the 802D3. If you can afford the 803 - buy it. But the sub first. It makes so much fun in a very good way.
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B&W_802D3+DB2D|Wadia_830|Nubert_NuPower A|CA Edge NQ|Audioquest
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