force heal is awesome but i also really love lightning. i am a raccoon king, personally. but if i have to choose, like in MP, it all depends on my opponents.
if i am playing noobs, i go dark side on their butts, because dark side is mainly offensive and i dont need a lot of help surviving against noobs. if i am playing the pros, i stick with the light side cuz i need the extra defensive abilities in order to hold my own with experts.