I was lucky enough to have been sent a pre-production version of the Pioneer Insider! It came with 8 different airflow pins so you can dial it in! I grabbed the biggest airflow one because it's the one issue I always have with Boro devices... not enough air! Well, happy days! This one has perfect airflow for me! I'm sure this is going to have a reasonable price compared to other boro goodies and it's really good! Will see how we go with condensation and leaking etc but so far so good! Really easy build and simple wicking! The airflow with the biggest airflow pin is almost the same as the Gobby with a 2,5mm pin and the Dvarw DL with a 3mm airflow plug.