Technically I should not respond to this thread because I have not heard the 705s. I have auditioned the 703s and the 805s both hooked up to McIntosh electronics and Rotel electronics. I've also heard the 703s hooked up to a Denon receiver (dont remember which) and here are my 0.02:
The 703s sounded really nice (one of my favorite B & Ws) overall but the 805s hit the high notes really well. The 805s do have the highly regarded tweeter of the Nautilii series and paired with a good subwoofer and appropriate electronics would be a great choice (especially since 2 805s are cheaper than 2 703s by one grand). Now, the 705s are cheaper than the 805s (but not by much, approx 25%) and I have not heard them. Therefore, even after this long email, my recommendation as always is listen to them yourself especially in an A/B setup if possible.
Mike
The 703s sounded really nice (one of my favorite B & Ws) overall but the 805s hit the high notes really well. The 805s do have the highly regarded tweeter of the Nautilii series and paired with a good subwoofer and appropriate electronics would be a great choice (especially since 2 805s are cheaper than 2 703s by one grand). Now, the 705s are cheaper than the 805s (but not by much, approx 25%) and I have not heard them. Therefore, even after this long email, my recommendation as always is listen to them yourself especially in an A/B setup if possible.
Mike