Useless thread, since S-Voice doesn't work on the Nexus 5. Why don't you post on the Note 2 forum?
I also prefer functionality over talking to a robot, but that's my opinion.
Although somewhat limited, good fun can be had with S Voice. BTW, I installed S Voice on my Note 2 through an APK.
View attachment 2825471
View attachment 2825472
Sent from my GT-N7105 using XDA Free mobile app