So you are saying that the AV123 setup is better than the Def Tech, not because you have heard them but because of what the people at the av123 site say about them. Don't you see the flaw in your recommendation?
You mean where I clearly stated that I haven't heard the Onix speakers....

that's why I said that. Also, reread my statement. I didn't say the Onix were better; I said I'd go with the Onix and that I feel you're getting more speaker for your money with the Onix. I'm a big fan of Definitive products, own their flagship towers from the 90's (love them), and have heard almost all of their products except for the newest Mythos speakers and a few in-walls, but I'm not a fan of their Promonitor series, which again yes I have listened to. Based on the info that's available and hearing what the 100 users or so have said on the av123 forums and a few of the guys here at AH, I think the Onix speakers should be hard to beat for the price ($339 a pair now for the towers, $165 a pair for the bookshelves). I've done quite a bit of reading on the Onix X series speakers since I have a gift certificate for AV123 burning a hole in my pocket, and no where can I find anybody coming up specific suggestions for a better sounding speaker for the same price (price is obviously a factor here too). For a product that everyone who hears it says it's the best speaker
for that price, I doubt you can go wrong, and yes even without hearing it. This is where I put my faith in our friends on the site here. I'm surprised no one else has chimed in yet actually.