Most ICO rating websites give you enough material for you to dig through independently, BUT they also have a conflict of interest in that they allow payments to list your ICO - so it is in their best interest to list as many ICO's as possible - that can lead to miss information.

I would suggest you take the popular ICO's and inspect it closely, see if it makes sense - or if it is just another pump and dump.

Also, gather information across various sites as this is a very new space, people are using varying methodologies as indicators for value propositions. Some are intelligent - others are not well thought through.

You don't want the tide to go out and leave you standing on the shore with "TRON" for example.

GL!