I don't understand when they say the presonus has a steep learning curve. What's so steep about it? I played with one for 15 minutes and had a basic mix put together...
Same here. It is pretty simple to use. In fact, with the IPad app, it is no different to the Mackie. One big difference between the two is that you can use the presonus with or without the Ipad - that might or might not be a variable 6 or more years down the line if Ipads change and the mixer no longer supports the new models. I'm sure that there will be adaptors and firmware updates down the line to adjust for this, but I like knowing that at least with the presonus, if the Ipad thing fails, I will still be able to use the mixer on its own.
Then again, $300 is a good chunk of change to save between the Mackie and the bottom of the line Presonus.

If you want faders go presonus.