Welcome mike!
I have a Sigelei Zmax, so I'm thinking they're kinda similar. Never used the Geni, but I have a boatload of Protank 2s with airflow adapters and a couple of Nautiluses. I can't sub-ohm on my Zmax, so I'm guessing you can't either. I love the Nauti mini with the BVCs (bottom vertical coils) I run about 12W on that setup. You might look into slightly higher VG-based juices to get denser clouds. Although, my juices are around 60p/40v right now, and I think I get a pretty decent plume, but I'm going to change up my DIY mix and I should be ending up closer to 40p/60v....
I did order from Mt. Baker a couple of times, but I bought most of my juices made by my local B&M. Now I make my own, so I have no idea what's out there - everyone has a favorite
