I think this is this forum is the best place to find ICO's. I find that review sites usually just take the highest bidder.
There are certain things you can look for, this is what i look for:-
great team - Look at developers, but also on the CEO's and the other parts of the team, regardless how good the concept is, the coin will fail.
White paper - Read the white paper and see if it makes sense. This is the business plan, the roadmap and how the coin actually works and what it is for. If this doesn't make sense, then it is a bad sign
Website / social media - These should be good, updated frequently and wanting to connect with potential investors. If the website looks half arsed, social media is clearly bought and there is no content creation then it's not the best sign.
Finite supply of coins - If there are no numbers, that is a warning. They should have numbers on how many coins, etc
Do they need a coin? - This is the most important, are they creating an altcoin just for an ICO? or do they need a altcoin to make it work?
Currently I am looking at Crowdholding. Good example of the above statements.
https://ico.crowdholding.comHope this helps.