I am no apple fan boy by any sense of the word, in fact I made my first apple purchase 2 weeks back but it always makes me smile when people are searching for functions (9/10 of these posts specify they want a function that the Ipods offer) but they won't consider buying one
The arguments for example sound quality do not cut it for me, if you are playing songs at 320kb with a decent (not the supplied crap) pair of headphones, it sounds great.
Really strange attitudes sometime.
And to the OP, yes, the genius function is fantastic and so quick. Another vote from me.