YET ANOTHER BRILLIANT THOUGHT (by -ED-, or 3351)!
OK, getting KORG Karma:
Go to the music store RIGHT NOW (Monday is better, 'cause they'll be open ) and play it. If you like it - buy it.

That's all I can say to you. Everything else is too theoretical. Just imagine...pick up your Karma, take it home, open the box take it out, plug it in and....finally start playing.
Oh, the smell of fresh equipment...I miss it.
So go for it. NOW!
You can always bring it back to the store if you don't like it.

-ED-