7........a

Practical. Affordable. Reliable. Easy to keep clean. (Glass components can be cleaned separately with alcohol and salt.) Once you're relaxed with the process it is easy. (Not the right vaporizer if you're usually in a hurry.) Plug it in. Push the dial on the front to turn it on. Dial up desired temp. Wait 3-4 min. Connect the glass tube/bowl (with rubber tube extension and mouthpiece) in which you've placed ground up flower and draw slowly. Turn it up higher (345+) while it's heating and then turn down (around 312) when you connect the tube. The right temp can vary depending on the desired effect and the amount of moisture in the flower. Do not overfill and do not let it sit with the heat on and flower loaded for too long. In both instances you are likely to cause the flower to actually burn and you've defeated the point of using a vaporizer. (Drawing really hard with the heat set high can also cause burning.) Easy to tell when you're getting smoke instead of vapor. Smoke becomes thick, bright white, and opaque. BTW, keep a narrow paint brush with short stiff bristles handy. It's useful for cleaning the screen where the ground flower sits. Negative - the design of the heating element makes it too easy for flower to fall onto it. Note: Have not tried other more expensive tabletop models to compare this too but it seems to work just fine.