Well, thet Trident ATB is coming out. No telling how good its going to be since no one's really heard a production version yet. They start at 16 channels and are in the $3K range. Gotta be better than than a Mackie 32-8 I reckon.
Other than that, a used console in refurbished condition is going to run more money. The most affordable thing I can think of is an old trident Series 65 or Series 24, which start around $5K and really should be reconditioned, modded and upgraded, which will run closer to $10K.