I have the Taurus. I got it because I like the trigger better, the LC9 is a very heavy, long pull.
The LC9 has better edges, as the corners and edges are all "melted" to make for more comfortable carrying, whereas my Taurus kinda digs into my hip if I wear it for much time in an Uncle Mike's IWB holster, but this will later be resolved with a better holster.
The sights on the Taurus are kinda cheesy plastic, and I don't know of any aftermarket sights, esp night sights.