Lightsheer duet vs. Fotona 4D vs. Lightsheer duet. Is one better than the others? (Photo)

Hi, my skin is light to fair and my hair is brown. I dont have coarse body hair. My main concern is burns and hyperpigmentation, since I have read some light skin people have had that issue with laser hair removal. I was wondering if anyone can provide me with some input on whether any of these would be better than the others? Or are they pretty much all the same? What should I take into account when making a decision? I appreciate any help deciding between these lasers.