I've never been a fan of large spoliers either, but I'm liking this. It's tastefully done, flows nicely with the rest of the Si and is in no way "obnoxious" like the STI and Cobalt SC tails.
Man, I've got to stop finding stuff to spend money on with this car!

I'm ready to pull the trigger on a CF hood...like any minute!!
Help me...someone...pleeease. I'mmm ssshhhhaaaakkkking!!