I think the 2 biggest factors with the Maui 5s compared to the compacts, are

1) price, $300 less, but if you already have the compacts then stay with them

2) the ability to tailor the sound a bit, you have a Hi-Freq control and a sub control, must people use a mixer or have that ability on their keyboards, but its always a good thing to have just in case

3) Bluetooth, now that can mean allot to some people and nothing to others, but it is a feature that is not found on the compact and also is coming in allot of other systems

4) your buying something from me