Have tried Lyko's own heated brush. The price is an indicator that you should be ready for it to be something you might be bothered by. A bit short cord, slightly heavy but definitely the loudest I've experienced. Paused several times and stopped earlier to use a flat iron instead. Recommend trying the sound (the noise) in the store. Now I can't make a return.
On the plus side: with earplugs it blows well, does its job, and the hair becomes straight and gets volume. Cheap and good
On the minus side: loud and shrill. Does its job for the low price