Close to the wall is similar to infinite baffle, so I would avoid full 6dB baffle step compensation. However, since that is not a published spec, just avoid "warmer" or "British-sounding" speakers. Without any idea of personal preference and amplification, that's all I can offer.
North Creek makes a line of smaller speakers which are designed for this purpose (near-wall). I heard them at RMAF in either 2010 or 2011 (I don't recall) and thought they were very impressive.
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