My suggestion, if you are also going for a woofer then look for speakers with good mids and highs, that is good vocals. use your speakers on high pass filter(mostly available on good amplifiers), take the bass from your woofer, this should put out good sound.
Which Company ................. well that depends on your pocket
My experience of speakers, Infinity is good overall in Vocals, JBL is good in Mid-bass. Woofer, depends on type of bass you like, hard hitting ones like Vegas or wave like bass as in Kickers.