I started with a Kanger Mega. Worked ok. But after I watched like a million youtube videos, I ordered an Istick 20w (in pink of course), a Nautilus Mini, and a regular Nautilus. I love that combo!! It's so perfect for me! I have recently bought an Apsire Atlantis sub ohm with the Aspire sub ohm battery. Can't quite get used to that yet. Not sure why.