This was a big let down. It's definitely not for big clouds. I bought it hoping for great flavor and not having to refill it often. Well, it achieved one of those, and it wasn't the flavor. The top airflow and control of the airflow should be a lot better. I've tried several different builds in it with several different wicking setups. None were terrible, but none were great. It's okay at best and for $60 I think it's outrageously overpriced for what you're getting. In my 4 years vaping I consider this my least favorite purchase and biggest waste of money. Hey, maybe you might like this, but I highly doubt it. I'll never be using it again. I'm glad I bought the VCST along with this, because Vaperz Cloud did far better with that. That was very good.