Portable ice maker, anyone have one of these?

We bought a Dometic (large) several years ago and it works great. Drops a tray of ice every 10 minutes. We use bottled water to keep it clear of hard water deposits. Ice is 'wet' and keep a plastic bowl in freezer to harden. A 48 qt ice chest takes about 2 hours if you empty the ice maker every time it is full which is about 2 cycles and the drinks are pre chilled (extreme ice chest).