RTU for SCADA application

We are in the process of changing the existing Substation and distribution RTUs to a new one. Basic requirements would be DNP3 communication possibly future integration to IEC-61850, 9 curretnt CT inputs 0-5A and 1 VT input, vertual input through SCADA:open/close switch and remote/local select. Vertual output to SCADA: Voltage, current, fault detection, over current alarm, sequence of event reporting, real power, reactive power, power factor reporting.

We want something latest than DART GE Harrison RTU and proven to work on the utility business.

Any recomandation. Thank you