What's the best way to straighten hair once it gets shoulder length and longer?

I'm growing my hair out and I've had a short bob for the longest time. I only started straightening my hair when it was short. When it was longer, I always wore it wavy. I like it straight, but now that it's getting pretty long, it is hard to curl the ends under with a round brush.

Is there a better way to do this with long hair? Should I be using a straightening iron? I don't necessarily want it curled under, just nice and straight. I will put layers in eventually so that my hair doesn't just hang down from my face.

Any ideas? Thanks!

Re: What's the best way to straighten hair once it gets shoulder length and longer?

I use a fine comb with a flat iron. I run the comb through the piece I am straightening and follow it with the iron.
Like this!

Re: What's the best way to straighten hair once it gets shoulder length and longer?

My hair past my bra strap and I can dry and straighten it in less than 1/2 hour. I dry it with a paddle brush and then use a straightening iron on it.

Re: What's the best way to straighten hair once it gets shoulder length and longer?

I have curly hair and before I got keratin treatments I'd blow dry the roots straight and just quick dry the rest, then take an iron to it. (a good one)

I have a iron with a comb built in, its the bomb!