1.) Be realistic with yourself, go with what you can afford.
2.) Choose one of the following, "LOOKS" or "PERFORMANCE." We live in a society that judges by looks. Remember (very important here) just because it "looks" expensive does not mean that it performs like it and just because it looks "low end" does not mean that it might perform like it.
3.)If and when you come across a real good deal don't think about it just get it! "..Think Long, Think Wrong!.." is what I always say. Because if you finally decide to go back and get it, it's gone.
4.) Take care of your investment. Remember every time you purchase a piece of audio equipment, think of it as an investment.
5.) "Take care of your stuff!" Come to a point that you are statisfied with your system, its when you want more, bigger, better or more expensive that ruin's it for you. Be content with what you already have.