Ha ..sadly I can't add any info about your light. However (for the record), I'm running with a cob light so old it's a Vipar (which i 'believe' was the name of Viparspectra before a name change). It's a nine cob unit (cobs are the old Chinese 'red,blue,green' kind). It pulls 512 watts at wall (all nine cobs on) and has two switches allowing either 9, 5 or 4 cobs running (at any one time). No issue with cob lights breaking or diodes dying (bought unit back in 2014). Probably worth £100 or less now (although I haven't seen one second hand). It also happens to heat my 1 meter square (2 meter high) tent to 24 degrees in winter (and 27/28 degrees C on hot summer days). So it ironically gives good environment
I mention this cheap light as I think genetics are the most important factor when starting a grow (especially an inside grow). As an example; I just got an excellent plant from a Strawberry Cream seed (breaking buds), before that i was flowering an old '93 skunk variety.
Have a look at my current tent grow, the strawberry cream plant is at the front on the right (the '93 skunt is at the back of the tent in a basic scrog). Both strains started flowering the same day (3.5 weeks ago), the difference is quite startling (fyi - the plant at the front/left is a Malawi x Panama, 1.5 weeks into flower).
Obvious an 600 HPS would beat this but then I'd have to deal with heat, light height, bulbs etc. And I get enough good meds with this light in this space (flower tent always set for 12/12), for the moment. One day I will go Quantum though ..one day