Which loudspeakers work best close to back wall?

Just avoid anything rear ported.

Revel Performa M22 has a switch on the back for near wall placement or flip the switch and pull them into the room.

As a general statement, speakers with that have downward or front ports tend to do better close to walls than those that are rear-firing.

You can download the Vandersteen in room compensation CD
off their website and see how far off you are
Take a SPL meter and measure Average 70 db rt ch track 1- 11 and left ch 15 - 26 and see what you
have now with your existing speaker.
The Vandersteen treo will work close and Quatro has the room compensation feature built in.
JohnnyR Vandersteen dealer

There have been a number of threads on this. You might do a search on "near wall," "Guru," and "Northcreek." Guru and North both make "near wall specific" designs; a pair of Northcreek Eskas resided happily in my system for five years.

Some of the Montana line are D'Appolito arrays that like to play pretty close to , their imposing side. Audio Notes are corner loaded, and work lose to boundaries.

John