It's a bummer about the lack of battery. I really like the form factor of the Mackie, but the Korg is stylistically superior.
I have a thing against playback systems that look like they belong in a 14 year old's bedroom...what can I say?
No offense to the 14 year olds in the room. I'm just not there anymore.
I'd consider something like this plus a plug-in battery pack for busking gigs. Interested to hear how it sounds.