I like Normís charge controller especially at its cost. I am using Morningstar MPPT 15 with its monitor which most of the time it is set to view panelís voltage. The Link10 monitor is usually set to view current flow. High panelís voltage, which I often see, such 20V or higher gives good appreciation for value of MPPT controller. At 20V PWM controller would be wasting 40% of generated energy. I believe this is Normís charge controller manual http://koneze.com/pdf/Manual_CM30.pdf
and it doesnít have panelís voltage viewing option.
If I would ever install solar
panels again I would choose Normís flex panels, VHB tape, and MPPT charge controller, most likely Morningstar.