Personally I have the Adidas Excel IC Pro cleats.
Around 60 bucks or so.
I threw a lot of innings last year and will actually be wearing my pair from last year again. Just put in new spikes because the old ones had worn a little bit from being in concrete dugouts.
The toe has very little wear on it.
As far as what not to get, I remember last year one of our guys said never get mizunos for pitching. He had gone threw the toe rather quickly and then had to put on one of those pitcher toe pieces for a lot of the season.