Hi folks, So, I'm a bit in the dark about mixers and such, so pardon me if my question seems obvious to some. I'm trying to figure out the difference between these two mixers: http://www.thomann.de/gr/behringer_pmp_2000.htm and http://www.thomann.de/gr/behringer_pmp_4000.htm I'm not talking wattage differences or different # of inputs/outputs, ohms ratings, etc. (I'm definitely not asking opinions on what people think about Behringer products, either). If all things were equal between their specs, why would someone choose between the two for live sound? Do they do the same thing but just have different design styles (one is more of an amp style and the other a classic mixing board style) or is there more to it than that? Again, sorry if my question is basic for some. I don't think I'm comparing apples and oranges. Thanks.