I am sure they will sound just fine, but that will likely be a lateral move from your Deftech speakers. A lot of the hype you have read is from people who upgraded from home-theater-in-a-box systems, and most sensibly designed speakers will sound like a revelation coming from the dinky satellite speakers in HTiB sets. The same goes for Elac speakers, I have heard them, they sound fine, but they would be more of a lateral move for you than a tangible upgrade. If you really want to take the next step up, you will have to save your pennies for something that costs considerably more than $500.