You seem to have all the bases covered in terms of amplification ! I play predominately in a church that holds 500 to 600 people. Massive volume is not important but absolute clarity and dispersion is. This keyboard amp sounds like a complete marriage made in heaven for the way that I play and for the audience i play too .

You can appreciate that being able to hear the sound in stereo everywhere in the room is a killer feature that I don't think any of the Amps you have mentioned can achieve at all. Even the HK Nano will only provide a stereo spot in a given area of two bose compacts and the majority of your audience will not be hearing in stereo although possibly you will which is just as important I guess . Anyway it will be while before I received mine as the amp is so far backordered !