tein basics are an excellent choice for street and daily driving.. it improves handling as well.. but it's not aggressive enough for competition use such as autox.. i also wouldn't really recommend it for track duty either (road course)
i've never really been too fond of omni's.. i haven't found a place for them either.. i think they're too aggressive for street and not optimally setup for competition duty either. but that's just my opinion. i know there are people who swear by them.