I have a ceramic brush similar to this:
(Actually I think my brush is also Conair, it's just a different color than this.) I use it to blow-dry my fine, wavy hair straight. The tag claims that the vents help dry your hair faster and more evenly.... But when I try to use a round brush to blow-dry my hair my hair tends to get a little too poofy.
However after I blowdry it straight, I use a 3/4" round brush with a metal barrel, also Conair, similar to this:
which I use to flip the ends of my hair out. I can't seem to get the flip right with the other brush. Both of these brushes have those stiff plastic bristles with the little knobs on the end -- since there's not a lot of bristles it seems to help reduce frizz. (Of course what really reduces frizz while blowdrying is my John Frieda Frizz Ease Wind-Down cream but that's another story for another thread
) You can find both of these brushes for about $5-6 at drugstores and Wal-Mart.
My hair is short enough that I seldom brush it during the day to detangle it, but when I do (and when I detangle it after a shower) I actually use a men's hair comb.
I'm not sure if it's the best for my hair, but it gets the tangles out much better than any hair brush I've tried and it doesn't make my hair as frizzy and static-y as most brushes -- or at least not as most cheap brushes, I haven't tried high-end ones