Hey,

If you are really serious about getting the kind of vocal ¨Sounds of the Pro´s¨, you will need 3 things:

1. A great mic (If you low on Budget, Rode makes some fantastic mics. Also check out CAD)

2. A great front end; i.e. Mic Preamp. There are many available, and price can be reasonable or high end, but if you want what many pros are using, Check out Universal Audio 610 MK II. it is pricey (Around $1500 at Sweetwater) But, you just cannot beat the sound. Many studios like it more than Apogee, which is REALLY great in its own right. Another alternative would be the Avalon 737.

3. The last thing I am going to mention is D/A and A/D Conversion. Don´t skimp of this, it makes a MAJOR difference. The right combination of these items will show you why software is good, but the extra effort and cost of the right Hardware will pay off in a totally professional project.

My humble opinion, based on many frustrating years using just about every software out there. Also, foolishly buying alot of Prosumer gear, looking for the sound the major studios come out with. I suggest you go to Sweetwater Sounds website, and read the Customer reviews carefully before buying. Also, make sure you buy from a vendor that provides a good return policy ( and NO Restocking fee!)
Ed