Forms in SharePoint Online

I would say it largely depends on your audience and the type of information you're collecting. I wouldn't build anything new in InfoPath though. 

You can use the built in forms as the whole page by linking them to NewForm.aspx (unless you've customized your built in forms already).  For instance:  https://yoursite.sharepoint.com/Lists/ListName/NewForm.aspx

PowerApps will give you a lot of control over the form itself and is not too hard for a tech savvy person. You also have control over logic that you'd like performed on submission, but you can also achieve that by building a Flow attached to your list. 

Microsoft Forms are useful if you only need basic data - the question types are limited. You can combine Forms and Flow to get information to a Sharepoint list, send emails, etc.