i use a mackie 24.8 on a regular basis. a lot of people talk smack about them, but it's a fine board. the pre's are nothing special, but they're clean. the slew rate is a little slow i think, so they have a mushy bottom end, but if you're a wiz with eq and compression you can work around it no prob.
people say stay away from behringer, which now as a grown-up i'd agree with, but lately i listen to my amateur kiddie recordings from way back when that i did on a little behringer and think they sound pretty clean. again, nothing special, but not grainy or offensive.
i actually like allen & heath. they are a little more expensive, but they have a little more flavor in the pre's. brits.
other than that i think maybe something used, like soundcraft or TAC.