Speakers help for a newb...

Let me start off by saying I'm a total newb to the audio scene so if I sound like I don't know what I'm talking about it's because...I don't. A buddy of mine recommended I visit this site to get some expert opinions.

I have a $1000 budget and would like to purchase a pair of speakers (new or used). At the moment, all I have is a receiver (Rotel RSX 1056). My next purchase will be speakers if I can manager to not get so overwhelmed by all the choices out there.

Here are my criteria:

1. Must be at or under $1000

2. If used, must be in very good functional and cosmetic condition

3. Can be floorstanding or bookshelf.

4. The fact that my musical taste is all over the chart (from Bach to Morbid Angel) needs to be taken into consideration.

5. These speakers will be in our main living space (room size = 15 x 15). My wife would probably prefer something that doesn't visually overwhelm the space but that's not a huge concern for me.

Please let me know if I'm missing any important information for you guys to come up with some good recommendations.

Thanks!!