Hi, I just moved over to Aus, so please pardon my grammar and syntax.
In my old setup in another country; i'm a mirco closet scrog grower using LEDs with CFLs. I was growing indoor in the tropics so i needed something really cool.
Veg-UFO 90w RB 90 degree view angle + CFL 4x24W 6400k
Flower-UFO 120w RBO 120 degree view angle + CFL 4x24w 2700k
*my leds are 1w leds; so not the best money can get.
A few tips:
-With leds, do not follow manufactuers rating on light coverage areas as they mean it as the ideal light coverage for cabbages and the like.
-e.g. when they say 4x4ft coverage, for our veggies an effective coverage would be 2x2ft or half the "recommend light coverage" for veg and 1/4 of the recommended (1x1ft) for flower.
-Leds are worth it when you grow in a small space like a PC box, ikea cuboard and stuff like that as the are much cooler than CFLs or any HIDs-> its better for stealth grows as it runs cool and is almost noiseless.
-If your trying to compare a 90w with a 400w hps and such, its never gonna work; its only effective if you compare 400w LEDs with a 400w HPS for e.g.
-They are worth the money if you have a small grow. My old cabs were 50x50x75cm and thus were awesome for LEDs.
-You can get great buds on LEDs but the distance must be only about 6-7" max away from your canopy; ideally I set my leds about 3" away if possible.
-Check your LEDs viewing angle(or whatever its called) I find that if your using LEDs as supplemental a 120 degree angle is better and if your only using LEDs a 90 degree is better.
-Don't solely rely on LEDs, add a few CFLs 6400/2700k depending on application to add some mixed spectrum to your plants it really helps alot! I don't believe a RB or RBO would provide all the necessary spectrum needed; but you could always fork out for a 5,8 or 11(or however many) spectrum LED light if your loaded. Ignore this if your LED wattage is ridiculous for the space your growing in.
-I have tried a pure LED grow(210w in 50x50cm area) with both my lights and I had my biggest harvest ever(in the old place). But perhaps this is due to light distance and comparing it the CFL/LED grows.
-Also if you like to garden baked, the glow from LEDs just make you stare at the cabs and your mind drifts away!
Right now I'm in Aus and my setup is in a homebox twin; still working with scrogs...
Veg-2x80w 6400k CFLs might get another one later though or more powerful CFLs...
Flower- 600w son-t hps + 90&120W LEDs ->over kill i know....
-I found that the 600w HPS with cooltube reflector(recommended 400w lol) in my tent was not giving the sides of the tent enough light(lets say lux intensity as i'm unsure of the word to use) and thus decided to either use 130/250w cfls or LEDs as supplemental lighting.
-I went with my old LEDs as the lux intensity(over distance) would be higher than on the CFLs(130/250w types) as i intended to hang them about the same distance away as my HPS, so i wouldn't block the light coverage of the HPS.
-My guess is that the HPS would fatten up the yield and the LEDs would supercharge the resin content(as i discovered with previous grows overseas).
-Have not gotten any harvest yet as i just started over here; but i expect it to be one of the biggest I would have ever gotten.
*i'm not a master grower only have a few years experience, but that's just my ideas since you asked for some.