It a bit hard to tell yet after 3 harvest with LED, but my friend and me feelings and observations so far are:@HerbalEdu: And what were yields in comparison?
plants produce it's leaves stages faster and get bigger faster with HPS 250W than with LED 200W the first few weeks of vegetation, being ready for the 12/12 flip sooner
yield seem pretty much equivalent/the same (may be a little smaller with LED) but bud are noticeably more dense and compact with the LED 200W than with the HPS 250W resulting in much more apealing buds once dried and cured.
this have to be confirmed with some more grows with some more strains.
i ll probably bump this thread again after a few more growsession from my friend and me to share our observations