IEO has become a new trend of investors and this type of investment has been very popular recently. I think the current IEO projects at the big exchanges can help you make a big profit if you're lucky and don't spend too much time waiting. In my opinion, it is best to participate in IEO at Binance, Kucoin or Huobi because these are the 3 best exchanges for everyone.
Currently, ICO are risky because 99% are scams and are not encouraged to invest because you can lose money anytime if the development team disappears.
That's why I no longer interested investing in ICO anymore and I discouraged my friends investing on it as well, for IEO, I am investing in some reputable exchange but of course it also depends, I become more wiser now and just don't invest in some project because of the hype and the good market they bring but because they met deadlines, roadmaps and they have real products
But IEO also has lots of scam projects for small exchanges. I have worked on several IEO projects on Bitsdaq such as Ichain and at Exmarket, resulting in those projects being scam as well as ICOs. no listed, no notice about roadmap. Therefore, IEO projects still need to be checked for whitepaper and team. Do not blindly invest.