I chose Zenyum for its low price, quick length of treatment (6 months), and friendly customer service.
Over the past few months, my Zenyum journey has been very smooth. All sets of braces are given right at the start, and you are responsible for changing them every week. Customer service will check-in with you on your progress every week.
I would recommend Zenyum to anyone looking to correct any mild dental misalignments, and I think it works very well for alignment of front teeth, which was my case.