People are always asking me which is better, a ceramic brush or a boar bristle brush? I think its really upto personal preferance. However there are some definite pluses to each. A ceramic round brush will help create more curl and a lot of volume because the blow dryer heats up the ceramic body of the brush allowing it to act like a curling iron. With this also adds shines and creates a smooth finish. And as with any other hot styling tool, make sure you use a heat protectant, especially when you have fine hair! It is so important to keep your hair healthy. A boar bristle brush is great when you need to smooth out frizz or curly hair. Especially on coarse hair it works well. You can really work out the curl or kink and smooth. Sometimes I will use both though to get extra smoothing!
Size of brush is always another question as well… Whether you choose the large or small round brush just remember what they do, and what the end result you are looking for is. When you use a small barrel round brush it will create more volume and curl. A large barrel round brush will smooth hair more and create a softer volume.