Most of the Eleaf I just series, and Vaporesso's Cascade One series use baby beast sized coils. Not sure how many others are starter tube or pen styled kits I know of. I have one called the OBS Draco that uses them as well. It wasn't sold stateside anywhere IIRC.
The best one of that type of style I've had is called the V9 Max kit. The coils are much better AZ and the battery lasts longer.