I briefly heard some Klisph speakers hooked up to an Sony Digital ES receiver with a Samsung player. They weren't RF-7's mind you, but I thought the highs were silky smooth.
Anyways the ES receiver is out of your price range. Why are you limiting your budget on a good pair of speakers like RF-7's? Anyways if you shop around you can probably find a good deal on last years models for a higher quality av/receiver. It'll cost more than your budget but it'll be worth it.