After growing big plants a few times with HPS I decided to finally give LEDs a go back in 2016 ish and at the time I had been reading about different lighting in High Times magazine, they were comparing HPS and outdoor buds to stuff grown under compact flourescent and I tried some weed grown under these, the yield was low but very frosty buds. At first I wanted to give flourescents a go but they were not efficient at all and CMH was too expensive so I started researching LEDs. Learned a lot about PAR and stuff but I didn't have a lot of money at the time so I started off small with a couple of blurple LEDs, a Meizhi and a Viparspectra. Changed style of growing to just small plants but more of them and the lights were pretty good especially in veg but yields were lower than HPS and a bit fluffy, which I expected at a lower wattage anyway but I found the plants were less stressed and the bud quality had actually improved! Not as dense but frostier and better range of smell/flavour imo. Eventually upgraded to some better LEDs, got some Optic cobs and my first lights that had the samsung chips, the Phantom/Phatslim 1. Still quite small lights but much more efficient and now I started to get very good GPW and quality was even better and consistent, as I was improving my new style of growing and enjoying it a lot more as well.
Once I was ready for another upgrade, the next generation of Optic LEDs was on sale but I couldn't get them in the UK without extortionate import fees after brexit, so I had to find another LED maker that I could get in the UK, plus LEDs were getting really popular and the tech was improving at a rate never seen before and that was when I discovered Invisible Sun. Seemed expensive so I had to check out some reviews etc, which led me to the GR420 podcast somehow and I found people there talking about the lights, I wasn't sure if I should get the 4R or the F-Bar but in the end chose the F-Bar which had a £45 dicount code (think I paid £290 for it).
Took me a couple grows to get used to it, I was surprised how big the plants got! After this I wanted only Invisible Sun lights so once the EVO chip arrived I got the ISH265 Evo Eclipse and now my setup is complete with the X-Bar added, I'm kinda back to growing bigger plants again. But now I'm only using 630w in a 4x8, how things have changed lol. Sorry for the long story I'm stoned
I don't know how ya deal with knuckleheads like me all day haha.
, so im gonna wang in some big yielders that I've grown before next grow just to see difference as a comparison. But those 600HPS lights is where its still at for me, hopefully my opinions may change in future though, only time will tell. 
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