You may want to consider the Snell SR.5 bipolar. I own a pair and have been very happy overall. They're in your price range new, look very good mounted on-wall, build quality is first-rate, and they sound great. Their tonal balance is fairly neutral, so they can blend very well with a variety of front speakers (they blend well with my Hales Revelation speakers up front esp. on movie soundtracks).
They will take plenty of power but are easy to drive (8-ohm nominal, 90dB sensitivity) if you wish to use a more modest amplifier. A bipolar speaker mounted on the wall behind your listening position will yield a more diffuse soundfield for immersive movie sound than a direct-radiating (monopole) design, but will still provide good imaging for "hard panning" sound effects. I find the Snells are a very good value and can hold their own in a high-quality system.
They will take plenty of power but are easy to drive (8-ohm nominal, 90dB sensitivity) if you wish to use a more modest amplifier. A bipolar speaker mounted on the wall behind your listening position will yield a more diffuse soundfield for immersive movie sound than a direct-radiating (monopole) design, but will still provide good imaging for "hard panning" sound effects. I find the Snells are a very good value and can hold their own in a high-quality system.