NextGen isn't my favourite genre, but some classics that I remember enjoying were:
Susan Stone\'s fic
Peabody's sweet little
Goodnight, Metropolis .
Crystal Wimmer's
Full Circle series.
Shayne Terry's
Hearts and Diamonds and
Duet As always, I know there's more I'm forgetting, but that's all I can think of for the moment.
Next Gen is a keyword of the Archive Database, though, so if you go
here and do a global search using Next Gen, I'm sure you'll find lots more.
Happy reading!
LabRat