Short answer, the Magnum and Smoke51 are identical and compatable, and I reccomend the ePuffer
batteries over the Smoke 51 batts.
The Mirabella is their "Marlboro" flavor. The flavor was OK. Not much
throat kick. But the cartridges only lasted less than 50 puffs, instead of 250 or so. That is probably just a bad batch, though.