Reply to Line Mixer Help

As my setup/sudio has expanded I have started to develop the need for a line mixer. The problem is I don't really know anything about them. There seem to be a whole lot of choices out there and i don't really know where to start. All im looking for is something that will let me run multiple sources to my speakers at the same time. I would like something with decent sound quality, or more importantly I would like to know how much do I need to spend to get good to decent sound quality. What are some brands or models I should look at?