If your looking to step up from the kangers the next big step up is what Space suggested.
The Rebuildable Atomizers. (RBA).
I would recommend the SmokTech RSST. It's well built, reliable and won't cost you an arm and a leg.
The perfect RBA for a beginning hobbyist.
There are a ton of threads here on the forum to help you along the way.
Good luck brother!