The mesh coil really does make a difference — flavor comes through way cleaner than my old tank, and the top airflow hasn't leaked a drop in three weeks of daily use. Slide and flip top fill took me a second to get used to, but now refilling is quick even when I'm in a hurry.
The slide and flip top fill is genuinely handy when I'm refilling at my desk, no threading to mess with. Only gripe is the top airflow takes a little dialing in to get the draw right, but once it's set the flavor holds up all day.