Very good. I myself own a mighty vaporizer, I love it. It costs some money when you buy it but saves a ton on the long run. Effect are stronger when you vape dry herb with less herb, take it slow, and wait for 10 mns before take another puff, the high arrives slower than when smoked but is stronger and more clean.
Let us know what you think of your purchase. If you want to sleep, go to the higher temperatures 200-220 degres C, and when buying weed go for the heavy indicas. Always have a bottle of water when you vape, iced water feels good after a puff. No need to take big hits, inspire slowly and enjoy.