Any rear ported speaker is unlikely to work close to a rear wall. I think that rules out Epos and Proac. Spendor S3/5s sound good close to the wall, but they have quite limited bass. Linn tukans have a good reputation close to the wall but I have no direct experience with them. Missions are also good, but probably not a sufficient step up.
In my experience putting a speaker very close to the rear wall destroys the soundstage (imaging), so it's not worth spending lots of money on a speaker renowned for imaging only to put it close to the wall.
Another option might be to look at a sub / satellite combo, perhaps the acoustic energy evo (I think thats the name), or separately by purchasing a mini-monitor like the S3/5 (or any LS3/5 for that matter) and adding a REL strata or similar subwoofer later. Having used S3/5s with a REL strata the results are very very good, but this would take you to at least $1500 which may be more than you're willing to spend.
In my experience putting a speaker very close to the rear wall destroys the soundstage (imaging), so it's not worth spending lots of money on a speaker renowned for imaging only to put it close to the wall.
Another option might be to look at a sub / satellite combo, perhaps the acoustic energy evo (I think thats the name), or separately by purchasing a mini-monitor like the S3/5 (or any LS3/5 for that matter) and adding a REL strata or similar subwoofer later. Having used S3/5s with a REL strata the results are very very good, but this would take you to at least $1500 which may be more than you're willing to spend.