After searching through the forums, I think I've narrowed it down to 2 choises the Sebatron VMP4000e or API 3124+. My current pres are the 4 on the Digi 002 and 8 Presonus Digimax (via light pipe) I'd like some feedback to help me decide my purchase. Compare, Contrast, where does one exceed in an application whil the other is lack luster. Whuch is better for all-around use? Flexibility? Another question are the power supplies on these units internal or external?