Best LIVE Audio Interface For MainStage?

Hi,

I looked around the forum and couldn't find a direct and recent thread so I'm here with a common question...

What is everyone using for live interface boxes for MainStage? I need to replace my dead MAudio FW410 and was looking at the Focusrite Saffire Pro 14 or one of the MOTU boxes.

I need it for live situations; I usually rent actual kybds and tap into my MacBook Pro for many of my sounds via midi. So the Apogee Duet won't work b/c I do need midi from one kybd.

Any opinions would be greatly appreciated and yes - cost is a factor ;-) Trying to stay under $300ish.

Thanks so much for your time!

Chris