Disclaimer: I’m not a prolific diver, I did about 200 dives, almost all in warm water (Caribbean like), few NJ shore and some quarry in PA.
I think considering a price this is a best recreational (take on the trip to warm place and dive) diving light available right now.
Timer sucks but it is not a show stopper, medium is enough for night dive, you don’t need to blind everyone and fish (on recreational dives you are in group 3-7 people - guide/dive master and 1 - 3 pairs), if you want to take a picture you still need flood light and here high CRI is nice.
High is nice for day dive when you look into holes checking if somebody hides there but then 3min timer is not an issue.
Another thing, for some time I was wondering about this thing fluoro diving, when you look for stuff that illuminates under blue/UV light. Blue is better, UV harms marine life and blue is causing better response, negative is that you see blue and you want yellow filter to get it out.
Anyway, I have Ferei W150 that I modded and put Royal Blue Cree XT-E in it. It is blue but it is not very strong.
I got 3 SD05s and I thought, lets put a blue LED in one.
Right, easy to say…
It is 6V LED, where do I get 6V blue LED, then….
it was like “wait a minute it already has a blue LED in it, it just has a phosphor on it”
So, I took some small pliers and removed dome from the LED, it wasnt gentle 
and it already removed most of the phosphor from LED, I scraped a rest carefully using wooden splinter and now it is a blue light!!
It seems little less blue then Royal Blue but I think this is actually good.
LED Before
LED after
Close on low
Back in light with reflector
Next to Ferei W150 (guess which one is it )
In real there are no violet rings visible just blue, smooth transition from spot to spill.