As someone who's done both I can tell you without a doubt that Invisalign is the way to go if you can afford it. I had regular braces when I was younger but I never wore the retainer so my teeth moved back. When I came to Dubai a friend of mine recommended Dr. Basel Mofti at Versailles Dental Clinic. One of the best experiences I've had dealing with any dentist. Super friendly and takes the time to explain everything in detail and also quite reasonably priced at least compared to London ( it was around AED 20k with monthly installments). IMO it's definitely worth it and I would highly recommend doing Invisalign with him.
I did my Invisalign treatment with Dr. Basel at Versailles Dental Clinic in DHCC. It was an advanced case so it took a little over a year and I'm not the easiest patient to deal with. But I can say in all honesty that Dr. Basel was excellent in managing my concerns, achieving my goals and most importantly dealing with my anxiety. I'm happy to recommend him. And best of all the price was very reasonable at AED 20k with monthly installments compared to other orthodontists I consulted with.