Sorry to muddy the waters...
But the POD won't work as the preamp except as an effect (something that sounds whacky). For $700-$1000, you can get a good condensor mic and a "voice channel".
A voice channel is a preamp, along with (usually) some eq and compression, though each one has a little different feature set.
There are discussions along these lines all over this forum, take some time and look at some of them.
Some popular mics in your price range would be the Rode NT1 ($200), NT2 ($300), and the new ones, whose model number I can't recall.
The AT 4000 series are very popular, the cheapest (4030, around $350)) is very well regarded in these circles.
JoeMeek, DBX (386), Presonus, and others all make voice channels for around $500, some are even less.
Good luck, come back when you have some more questions.
By the way, to answer your question specifically, I would proabbaly pick
the Shure KSM-44 as the best under $750 mic. It goes for $699.