Hi CO folks!

I read on FlyerTalk that CO doesn't provide pillows in domestic F. I'll be flying all day tomorrow in CO domestic F, LGA-IAH-SMF and return.

UA always provides pillows, but most of the time I don't use it, since I find the headrest comfortable enough. But if the headrest is thin/worn, then I do use the pillow.

So my question is: how is the comfort of the CO domestic F seats / headrests? Should I bring a pillow, or buy one of the neck pillows that airport stores sell? Or is the headrest comfortable enough without any need for a pillow? I have a long day of flying ahead.

Thanks!