Either ICO IEO or STO, this shouldn't be what you will rely upon to get great benefits from new projects,what makes a difference is the thing that the teams are attempting to construct ,the inquiries you should begin posing to yourselves is what innovative idea will the new project offer crypto space ? Also, how great are teams records.
Many investors are complaining that they are at lose investing in some IEO projects ,these investors believe that all IEO projects are good and should be able to double or triple their ROI which is not possible unless they actually do good research on the projects first ,lack of research will always leads investors astray
I would reconstruct the word "sometimes" to "always", no matter the fundraising type of a project if it doesn't have a real use-case and the team looks shady. It will not bring you good profits, always do your own research in investing. In fact, it doesn't matter whether it is an IEO or ICO as long as the team is active,transparent and hard-working.