StuderXtender XTM 4000-48 or SMA Sunny Island 6.0H ?

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Gatti
Gatti Registered Users Posts: 13 ✭✭
Please help to choose between them.
Plan to use 2.7 kwt solar panels, 8x150AH AGM batteries.
Preferences are:
1) Smart working with batteries which extends their life
2) Data logging to optimize settings
3) reliability, resistance to non-stable Grid, future upgrade