I had ceramic braces as an adult and had them removed about two years ago. It was the best thing I ever did (Braces) and I wish I'd done them before.
If you have problematic teeth, you are probably best advised to have braces rather than invisilign because of the limitations of that treatment. Insivalign is best suited to more minor cosmetic adjustments. If you have any major issues, then braces will give you a better result.
Personally, I would say it is worth having tooth coloured ones because bizarrely I found plenty of people didn't even notice I had braces. Turns out, many people don't spend their whole lives studying other peoples mouths. Colleague I saw every day first noticed my braces after about 8 months.
I add the following further caveats:
o - depends on whether it is a serious financial struggle for you. If it is affordable then I would do it - subject to further points below. If it is financially back breaking then I doubt it is worth it.
o - depends on your estimated treatment time. If you are looking at 12 months, you may figure it's not that long and save your money. If you are 18 months +, then it's a long time to be in braces and anything that lessens the cosmetic prominence is a good thing.
o - depends on how strongly the aesthetic bothers you and how much it affects your life. I was single and do a job with public smiling interaction so the aesthetic look was important to me. As it turned out I later resigned myself to not dating as it really bothered me and I felt a new man wouldn't be interested in negotiating the brace. If you are in a relationship and this is less of an issue, then again it maybe worth saving your money.
To sum up my advice:
If it's not a financial problem, 100% get tooth coloured ones. If it is a medium financial struggle, then I'd get them if you have a long treatment projected time (over 12 months) and aesthetics is important to you in your day to day life. If it is a big financial struggle, then it's not worth breaking yourself over.