Well it depends on the project. I would rather invest in a ICO sale than trade in a exchange.
For me its better to make your own research since this is about money and its returns. Access to many info and sources as you can and people behind the projects. Also, check their previous projects if any and their roadmap and whitepaper, its am must.
My current portfolio:
RAIDEN
APPCOINS (sale just opened, the technology looks hot)
CINDICATOR
all utility tech tokens with strong teams