I've been using the Hydrology9 now for about 3 months and I have to say that it is by far, head and shoulders above any other vape that I've used. I am incredibly impressed with the construction of this vape, the ease of use, and of course, the great hits you get from it. Only drawback is making sure that after cleaning, make sure you tighten all pieces to ensure no water leakage. Through my own fault, water leaked into my flower heating chamber which caused it to stop working. Being my error, I contacted Cloudious9 asking to have a replacement chamber sent to me at my cost. They were quick in responding and telling me that they will be sending me a new chamber with no charge. Now that is customer service, which is lacking so much these days when dealing with companies. If you're looking for a new vape, don't hesitate to deal with Cloudious9. 10 stars from me!