Victron's Smartsolar MPPT Controllers offer efficient battery charging from a solar pv array.
MPPT charging is far more efficient than standard PWM charging, especially when there is little sun and the batteries are deeply discharged.
The Smartsolar range offer built-in bluetooth, enabling detailed monitoring on a mobile device via the Victron Connect App.
With a 5 year warranty, excellent customer support, large user base, you really won't go far wrong choosing Victron.