ok, for summing - this might sound wierd, but i think - and it wont cost much - try a studiomaster mixer from the 80's with the bass AND low mid eq. They have a sound, very present and defined, but cheap - mind you dont get one with crackly knackered channels of course, but any good tech can sort out such problems.
it is really a classic old british mixer now, but on the cheap. I've got one btw ;) no way i'd sell it.
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I had an idea for a script once. It's basically Jaws except when the guys in the boat are going after Jaws, they look around and there's an even bigger Jaws. The guys have to team up with Jaws to get Bigger Jaws.... I call it... Big Jaws!!!