My advice... look at the forums dedicated to audio/video nuts, and visit stores and showrooms to get a good idea of what is available. Ask questions, but take the answers and compare with what others have said as well. A lot of the time you will get biased answers from people who like a specific product or technology more than others, or who have other intentions (need to sell an item), or may lie because they don't know the answer and don't want you to know that.