B&W 805 models...

According the British HI FI Choice (May 2005 issue), the 805S significantly outperform the Sig 805, sonically speaking.

Marketing or... - I don't know.

BTW - many roumors about (possibly?) newcoming 805D - presumably improved 805S in several areas, with major gain in Diamond tweeter...

I have these speakers pair of 805N, and a pair of 805S I bought the new. Started out with 805N as a stereo set up then upgraded room 5.1 So bought the 805S and HTM4 for center. These are outstanding speakers. But lack low bass. I would not recommend these speakers without using a sub. Let me add this too. I would add a self powered sub to all speakers. This really takes the low end of the main amps and speakers.

Sorry to resurrect a 15 year old thread(!), but I am not finding an answer in my Googling.  

I heard a new pair of 805's over the holidays and was impressed.  I have a smaller listing room and think that this speaker may work well in my space.

In searching the secondhand market, I am confused by all of the models.  I am thinking that I'd like to pick up a newer pair, but what are the models and timing from the past 15 years?

Sorry to resurrect a 15 year old thread(!), but I am not finding an answer in my Googling.  

I heard a new pair of 805's over the holidays and was impressed.  I have a smaller listing room and think that this speaker may work well in my space.

In searching the secondhand market, I am confused by all of the models.  I am thinking that I'd like to pick up a newer pair, but what are the models and timing from the past 15 years?

@andy727I would stick to the D series of the 805, there's a D2 which started around 2009 and the still current D3 version which started around around 2016 (I think). 

Depending on your budget either will give you a good sound in a smaller room but I'd suggest a subwoofer to go along with them. I've heard the D3 with a JL D110 sub combo and it was fantastic!