Totem Acoustic Rainmaker or Epos M12i.

I assume from your comments that keeping the speakers on the bookshelves where they are now is ABSOLUTELY ESSENTIAL. 

If this is the case, then there are two speaker systems that would be the best performers for your equipment and price range:

#1- the PSB Imagine B; these will give extremely good performance in the situation you describe (see the full review here on this website from Vol.32 #2 Stereophile. ($1099)

#2- the Dynaudio Excite X12; another excellent performer (review here on website from vol.33 #3). ($1200)

I think that these two speakers are unquestionably the two that really stand out in your price range.

IF, however, you could switch to a pair of floorstanding speakers...the PSB Image T6 speakers at $1299

will outperform both of the above speakers, and give considerably more bass, of course.

Putting speakers on a bookshelf IS A SEVERE LIMITATION!!! NO speaker performs at its best on a bookshelf, but if you are stuck with that unfortunate situation...the speakers above will be your best bet.

Not sure if you decided to upgrade, but I would buy your 685's potentially.

Let me know.  Mike@formpakinc.com

Mike