Danny,
There's not too much that will make me want to return this. I like having Korg, and Yamaha sounds/styles available in my studio, and this is nice and light for the one nighters.
The only remaining issue I have is with Yamaha's treatment of the one finger mode. I prefer the way Korg addresses this. I can hold down one finger, and get a full chord accompaniment, Tonic & 7h for a maj 7th, and tonic and b7 for a dom 7th. Yamaha one finger mode uses that old Casio method of triggering. One finger is maj, add a second white key to the left for 7, and a black key to the left for min. Don't like that.
Thankfully, I play manual bass quite a lot, so it's not an issue.