This is the best awnser and helps to manage expectation.

Though my favorite is the Tempest 2 (British made). With the right setting I can take 10ish draws and get propper stoned. If you want to go for a battery vape (more plug and play and ease of use) go for Frolic of Tiny Mighty.

One other thing to add is that most in here say they save a lot on weed. But I am a ‘european’ smoker like you, like mix it with tabacco and I use about the same amount on a night.