I've found that because TAXI listings are so diverse, it makes sense to have multiple versions of your songs in mulitple genres. If it's a lyric that can be applied in multiple genres, having different version allows you to submit the song to listings in different categories.
So, if anyone is interested, let me know. One of my goals is to be able to help songs get to another level, the way Timbaland got One Republic's "Apologize" to number one!
Cheers!
www.soundcloud.com/neilebanks - and the sites in my signature below!