XLG, HLG both will do their job fine.
the xlg.-240-m just have one amperage adjustment screw you should be quite save by simply turning it to the left (min.) first and go from there.
as long your XLG isnt overpowered for your led setup you shoudnt have much hassle.
as long youre not taking a CFL driver for your leds
.
real high voltage starts at about 600v depeding on the definition.
This definition explains the meaning of High Voltage and why it matters.
www.safeopedia.com
but better safe then sorry for sure.