I'm using the Pre's on my Mackie 1402-VLZ Pro. I am interested in something that would be an improvement over them but don't have a bundle to drop. $500 is the max for the budget and I would need 2 channels. The GC cronies promised me that the $100 Presonus TubePre would smoke my mackie. Forgive me if I don't take their word on that. Any opinions on this or any other units would be appreciated. I have already had a few locals answer with "Virtually anything is better than those..." I had no illusions that Mackie Pre's were the best available but I didn't think they were all that awful to justify that criticism either. What say you all?