What Monitors would you pick for my new office (bookshelf) >>

I just moved to a new office and am piecing together a small system.  I acquired a Grant Fidelity RITA 880 as the amp and running into that from a Bluesound NODE - better DAC on the horizon but using internal for time being.

I need speakers that will sit on built in bookshelf - so size does matter.  18"H and 15"D is about as big as will work.
I am currently running a set of pro-audio monitors that are too clinical, and lacking bass at low-level during the day listening.  Adding a sub is probably out of the question - its a private office but there are others working in adjacent areas. 

Goal:  Looking for something with a little more warmth and depth.  Aesthetics do matter in this situation but a far secondary consideration.

Budget:  ideally in the $2,500 range but could extend that up $3,500.
I have been looking at Harbeth 30.1, Joseph Pulsar 2s -- both pushing the budget (used).  This is turning into a third listening environment, most of the time at lower background levels.  

Welcome thoughts.  Or sell me on what you are selling!