I'm SO GLAD i found this thread! I started a thread on another forun titled "the best of the worst" which was asking ANYONE who had used them to please help me choose between these 3 entry-level 600 watt HID kits: 1) APOLLO 2) IPOWER 3) THUNDER (by hydroponics pro).. All 3 kits are VERY SIMILER, all under $200 from Amazon including digital ballast, bulbs, air cooled hood, cords, timer, & hangers.. They all have similer warrenties: 3 yrs on ballast & 1 yr on bulbs.. As for the many Amazon reviews..i do not trust them much since i read that at least one of those 3 companies were giving away "free gifts" or "rebates" for giving a good review..pretty sketchy. Plus most of them are within a month or two of buying the kit..i wanna know if they'll still work in a few yrs, not months. Thanks for the thread..anyone use an IPOWER or THUNDER setup?? Thanks, S.J.