I don't know if you are looking for analog or digital ... but have been using the Mackie Pro XF 8 for larger gigs, and gigs where I am playing with guitar/vocalist, and or sax player ... it has worked great for me ...
http://www.mackie.com/products/profx8/
http://www.mackie.com/products/profxseries/pdf/ProFX-OM.pdf

http://www.amazon.com/Mackie-PROFX12-12-Channel-Compact-Effects/dp/B00352MHGK
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t. cool