EFI question

I'm consistently tempted to upgrade my Megasquirt setup with one of the MS3 Gold boxes that are prebuilt for a 3G Hemi, but I can't make myself spend money quite that easily. I just like the flexibility of being able to use just about anything you want with the Megasquirt setup, but it does take some dedication to make some of the parts work. A plug and play "black box" is nice in a certain sense because it's easy when it works, but if something goes wrong it could be harder to diagnose.