1. London Crypto Currency Exchange #LCCX
2. Truegame
3. BitRewards
4. Minerva
5. XTRD
To find the reasons behind this list of the best, please read the below article, this is a great review on CryptoCoinDude website:
https://www.cryptocoindude.com/icos-april-may-2018/Wait, you're basing this list on the reviews of CCD?