@Pelo911 : I agree with Lowrider57. Even if i think your speakers is a limitation, you should try to optimize your system before changing anything. An optimization is always a good thing to do because, even if you change your speakers afterward, you'll always keep your optimization! Furniture is a good start. www.hifiracks.co.uk is one of the best gear i heard to date for isolate electronics's vibrations. Try to move your speakers in the room to test acoustic problems.
My recommendation for speakers is always the same : USHER AUDIO. Best speakers for the money, period...