After 3 months or so use, i have had no problems with the little HRSI controller on my 913. Seems to control the genny better on windy days.
BUT i have split my charging system using a morningstar for Solar.
The hrsi has only a single output, input for wind and input for solar. not sure of the full specs but am sure they will be on the marlec site.
Still wish i'd bought a 3rd panel instead of wind genny for here in the med.
Regards
Roy