I'm currently on Invisalign, paid RM20k for it but also comes with 5 years "warranty" so you can basically refine your teeth as much as you like for 5 years.

The fact that I have a choice when to wear it and when not to wear it lol.

Honestly speaking the reason why I took Invisalign was because I couldn't make it to the dentist for monthly tightening visits (for braces) I was away at sea for 6 months a time so Invisalign was the best option for me. Initially I was super gungho, I will wear it all the time except for when I eat. After a couple of months I only wear them whenever I'm off work (because I'm in sales, a lot of talking and it was a bit hard with the slight lisp).

Now I'm on my refinements and I only wear them when I sleep (because I like to eat and am too lazy to brush the aligners) It depends on how fast you want the results to show, if u want it fast, wear it all the time. For me things were different because I had like 18 sets and 6 months before I can see my dentist so I stretched them out.

I don't think they're very different from conventional braces as well, coming from discipline and whatnot.