The Mars EVO and ACI EVO lights are exactly the same. They're both from the same assembly line of parts but get different boxes and brands. The SF EVO light is also the same and comes from the same factory but configured slightly different to make it look like it stands alone but it's the same thing under the hood.
Basically, any light with EVO in it's name is gonna be the same thing as the next same size light with EVO in it's name and that's because they're all using the same Samsung tech under the hood.
When all three are the same, then I suppose it just comes down to price, warranty, and customer service.
They're all an upgrade over the Mars TSL2000 as well
Samsung has also gotten out of the horticulture game so the EVO diodes are likely the last of what Samsung will offer. IDK If that means no new models coming and development has stopped or they'll still make EVO for companies like ACI, SF, & Mars to build new lights.
The Samsung EVO are top shelf. Not quite there with Osram but very close and so close some strains and some growers would not see a difference when comparing the two.
The discontinuation of EVO may leave a void for another so in the coming 2-4 years or so we may see a reset button on LED with a new wave of tech hitting the market.
The one constant though, never pay retail sticker price on a light. There's always a sale or a code. Some as little as 10% and as much as 30%. Just never pay sticker price
