600W QB288 V2 R spec LED Kit = 1525 PPF
HLG 550 V2 LED grow light = 1178 PPF
So, the 600w QB288 puts out more light so should result in a higher yield assuming all other variables are the same and that all the light emitted is in fact reflecting down onto the plants.
not really sure -- right now i have a 600 W Y Grow full spectrum - it does run about 180 W when measured so it fits right into my budget -- then as for side lights i do have a unifun 45W red n blue led that is 15 x 15 so 225 on led's - works great for seedlings and beginning vegetation -- the other two light i have i got from home depot - 1 is blue and one is red spectrum at 19 W for adding to the main light setup
nothing fancy but gets the job done for my needs and the styles of grow as well -- not every time am i looking for a huge yield but more on Quality -- last grow i had i did get 193 G so i guess its big yield -- if i had the room i would try a side by side and see how it goes -- ( making room for a winter season ) there are alot of good light systems to choose from
sure i would like to have more than just one going -- but right now that is all i have the room for , plus working on a very tight budget without putting up any alarms -- like i said nothing fancy but do get good results for a 3.5X3.5 homemade chamber
hope that whatever you choose it will be satisfying the entire time
best of luck and Growers Luv Peace