I’m glad you found it helpful!
Ultimately, it depends on your teeth and the complexity of moving it – your dentist will then advise you on which method (Invisalign or braces) he thinks is the most appropriate for achieving your desired results.
As to why I chose Invisalign personally, probably because I was vain and just fancied “invisible braces”! Another consideration of mine was that braces are fixed in the mouth, and therefore prone to trapping food and difficult to keep clean.
My advise would be to seek several opinions from dentists (I think in Singapore, dentists are generally super friendly and happy to provide free advise, as long as you have a genuine intent for treatment), including at least one from a dentist who is very experienced with both braces and Invisalign. This will help you choose the option that’s best for you.