Bookshelf Speakers that have to be up against the wall

I have a very similar set up and placement limitations -bookshelf speakers on the cabinet, fairly close to wall. I have two recommendations that work for me. Proac tablet 10 which are sealed speakers, and Wharfdale 220 or 225 which are extremely good value with down firing ports. Both of these work great on the cabinet even 6 inches from the wall. I put mine on acoustic pads as well. I own both speakers. 
other speakers have not worked with this placement in my experience.
proacs have better bass than the Wharfedale but much more $

Check this video: https://www.youtube.com/watch?v=zg5J3j_ANDU

just to add that my Proac Tab 10's on cabinet are in a mid sized bedroom, not the main system. I wouldn't recommend tablettes for a large room necessarily. good luck.

In my home office's desktop audio system, I've had 4-5 pairs of speakers over the past 12-13 years (2 powered; 3 passive). All were located w/in ~1 foot of the front wall (actually an inset picture window covered with heavy blinds). 

The main thing I learned is that sealed/acoustic suspension systems work better near a wall than any ported designs. 

I currently have 2 such speaker pairs: my main pair is ATC SCM12 Pros, large/heavy 2-ways that sound rather amazing. 2nd pair is a pretty 4-yr old pair of Aerial Acoustic 5Bs, also a relatively heavy 2-way system. The 5Bs have better soundstaging and would probably light up the room w/soundstage if pulled out from the wall & put on stands. I'll sell the 5Bs soon because I just can't keep multiple pairs of speakers going...and I love those ATCs. 

Had the Wharfedale Diamond 225s here and they sounded pretty good, though clearly not in the league of the 5Bs or ATCs.

Sealed is the way to go when near-wall placement is unavoidable.

Note: my system is nearfield, which probably minimizes the soundstaging deficits of close placement.

++ Linn Sara (if you find any they may need a little attention but you won't hear better! ).