I started with Audioengine A2+ which were good but I wanted "more" so I upgraded to Audioengine A5+. The A5's sounded pretty good out of the box, but they just get better and better as they break in. I'm using two BDR cones under the front of each speaker and one of Herbie's sliding "pucks" in the rear. The speakers flank a large (35") monitor on my desktop and are about 8" from the rear wall.
I use the speakers as computer speakers to listen to music while I work, but IMO they're good enough for a main system in a small room. They rock, they roll, and are also great for classical music, jazz, and solo instruments like guitar and piano. The speakers come with a nifty little remote control which is useful when I roll my chair back to "the sweet spot." One other thing: customer service is superb.
I am very happy with these speakers.