Rather than name a particular hair, I'd would suggest a couple of vendors who make nice hair sets.

Here at Renderosity, you can search in the market place under Poser, then V4, and then under hair to see images of the products for sale.  I buy a lot of 3Dream & Mairy products. Look their stuff up and you'll see a variety of styles. I also use some of their body textures. They also sell under the same name over at Daz.

At Daz, I would also look at Neftis3D. You can also search over at Daz under hair, and see pictures of what's for sale.

There are other good vendors, but I've had good luck with these. If there was a particular style you were interested in, maybe post that info.

Good luck