The second one looks interesting. I haven't been terribly interested in the packaged system because I need to light a small, round area, but everything seems to be make for long rectangular areas (wonder why, LOL). I'm not terribly afraid of putting parts together, I'm just not sure where to start with it mostly. But a family friend has made LED systems before for his truck and is always tinkering with stuff, so I'm not going in utterly helpless.
I would probably make a housing for the light, including a heatsink, but that's mostly so it's approved of by they-who-own-the-house.
In that case you could start w/ a Vero10
5000K 90CRI 26.5V 350mA 9.3W
36V power supply (or a tweakable 24V)
Driver of choice (Meanwell LDD350-H if you want to do PWM dimming, others if you want some other dimming
A lens for the Vero
Heatsink (used CPU type...)
asst. bits wire heatsink compound
Dimmer (depends on driver , Typhon for an expandable 4 channel dimming for LDD drivers.)
The Decor line is higher CRI (rumored to be cyan spectrum doped) so it is somewhat (though no personal experience w/ any of the Vero line) better for plants..
you could easily buy 2 2W star LED's and do the same..