I used the have the S10, S20, and S40. They make really excellent movie speakers. Not the most detailed but really smooth and good for slow, and really sweet midrange. Actually it could get detailed if pair with a good amp, that thing is 46lbs each, it is easy to drive, but to get all that out of it probably need more than the pioneer a-35r amp 45watt I was using at the time. I really like the base reponse for the S40, factory claimed it goes down to 26hz, it is good for movie. Slower music like jazz and blues sound excellent on these. Another awesome thing is s40 is 5ways and not made in china. I got it for $180, its hard to find these day and they normally go more than $200. These speakers are like a little known secret, they perform so well, I think if you could find the towers to go along with it it could be and excellent deal. Stay away from the other cheaper 3-ways acoustic speakers. Company went out of business now, bought by audiovox so thats what you're buying these newer ones and they are really bad.
You could go to ebay or audigon and look out of old Kef Q speakers or B&W but that could be tough. Mission M70s speakers used to be popular.
Or you could get these Celestion F-series speakers, you could buy the whole package for less than $400. They used have silver dome tweeter but now they use titanium I think it may a bit brigther.
The speaker world is really big comparing to headphones, so choosing speakers is harder imo because there are a lot of variables concerned. It's good to visist speaker forum to see what other people use. Like avsforum or check out audioreviews, although those are bias reviews it can be useful.
If you do look into onix I would recommend looking at the towers. You won't get that impact for movie with the smaller speakers, and you may have to buy extra stands for them aswell. I am very stereo bias, so i always prefer a more expensive 2 towers over smallers ones, if I cant afford the whole 5.1. If i could afford the 5.1 I would ditch it and buy an even more expensive 2 towers. But thats just me, I only have two ears.
Point is its better to buy some good speakers when you are spending low and enjoy maximum clarity and bass response, rather than having 5 cheapie speaking that none sound good.
