I've gone back and fourth on my Wave2 from loving to not loving to loving.
Unfortunately there are two issues that keep me from moving from loving to really loving, and they are,
1. Being able to turn off sustain per layer
2. Being able to set a note value for each step in the Arpeggiator.
I own a Korg M-50 from seventeen years ago and you can do both. Mater of fact I can't think of another keyboard in the price range in the past ten years that can't do this.
Very ANNOYED!!!