I had exactly the same hesitation. I didn't want to trade editing capability for the ease of use of my S910 and S970. My only other recent exposure to Korg was my Micro Arranger, which I found confusing and awkward.

No worries, as it is a bit different than Yamaha, but just as easy. You just have to learn a few buttons and drop down menus. This doesn't mean you don't have to put in some time, but it is laid out so logically that it isn't frustrating. I think it is fun to learn one thing at a time as I get beyond the basics.

Try it you'll like it.