Harley and Bob,
Is the Hafler really that much better than the Alesis? I have an Alesis w/my 20/20s and have been pretty happy ... myabe I just don't know what to compare to, but the mixes coming off this have been pretty even and the amp itself seems clean and quiet ... do you have any anecdotes so I know why you favored one over the other, and hence why I may consider selling and switching?
Of course, all this is moot if your control room acoustics suck. Like many homereccers, I'm in a modified spare bedroom with minimal treatments. In a situation like that, I think it's best to get reasonable midrange gear to get signal clarity, then get used to how what you're hearing in the control room translates to the outside world. And don't do mixes when you're ears are fatigued.