Anyone ever use the Waves Scheps 73 or UAD Neve 1073 Preamp & EQ Plug-In Collection for recording vocals? Which did you like better? And is there a better software mic pre plugin available? Thanks for any comments you might have.

Those are two very different beasts.  Not only do they sound different, but the UAD plug can take advantage of the Unison feature -- which mimics actual preamp impedance behavior -- when used with Apollo interfaces.  You likely won't find a more accurate software emulation of a real Neve preamp/EQ than the UAD 1073.
 
The Scheps has its uses, though. I've found it to work great when used on multiple tracks of a dense mix, even beating out the UAD in that context.  I joined in on a shootout over on GearTrollz a while back:  1073 Shootout
 
One other 1073 emulation that you might want to try is the Sonimus Burnley 73.  It's right up there with the best, and very reasonably priced to boot.
 
Cheers,
Eddie
 

Thanks for the reply, Eddie. Will check out Sonimus.

If you want just that neve color , bes ure to try slate preamp or even simply the kush audii N preamp (29 $) i simply love it  !! be sure to try it ;)
 

It isn't really answering your question but the Scheps I use a lot for M/S processing. One of my favorites on a drum buss or even full mix.

Scheps !!!!!!!
VOCALS

..........and (scheps) Bass, Guitars, Kick, Snare.
 

Thanks guys for the replies. What I'm really wanting is a great sound while recording the vocal. Something that will sound good through the headphones while I'm singing to give me the inspiration to really belt it out (need all the help I can get).