I have been but the $400.00+ price tag is too hard right now, t5's are $125.00I've been using CMH for veg and they look amazing. Only 315w too.
I'm about to pick up 2-3more of these lights... Look into it, they work great for veg.
and bulb replacement is negligible plus with the right bulbs they can do as well
as metal halide for veg.
I'm actually looking into them for the flowering room for their higher PAR value.
Thanks for the always wanted input I do appreciate it