Well, I upgraded my two fronts and center channel from Kenwood HTB-504 speakers to two Infinity Primus 250s and a C25 Center Channel. All I have to say is: Holy freakin' CRAPOLA Batman!!! What an incredible difference. I'm *still* noticing a LOT more detail in the sound as I play many of my DVDs again. In many instances I've discovered a lot of detail that has been missing in music and movie soundtracks. What a difference these speakers make! And, combined with my SVS Subwoofer (that I still have yet to write a review on...be patient. I'll get to it!) I'm going to have a blast with my new upgrades. I'd give five thumbs up for these speakers but since I have only two thumbs and two big toes, I'll give five virtual thumbs up for an excellent speaker from Infinity.