As you say the key is to get some speakers that don't need yards of space behind them to really sing.
None of mine (Regas, Ruarks and Tannoys) have ever been more than 10 inches away from the wall. I did have my Quad ESLs out further but didn't think the results were worth the effort so I sold them on.
There is also that old chestnut about close wall proximity speakers not imaging as well as free standing ones.
Not sure if any consensus was ever reached on that one.