they both will work but by guessing your grow dimensions (closet?)your going to need an air cooled hood. batwing reflectors will heat it up without the assist of airconditioning or aircooled hood. also there is a bunch of crap sold on ebay. those that you listed hasn't told me if there is a warranty or not, i would be worried that 2 months later that the ballast crap out and your stuck with a paper weight. also hightechgarden supply on ebay is crap too. its chinese junk that you will end up buying better quality stuff later. i bought a hood from them and 2 years the inside discolored. with that space i would get two 250watt aircooled lights!