After using the Hydrology9 for a week or so I feel I can give a decent honest review. At 1st blush it is quite visibly striking and the tactile feel and heft indicate very good build quality. I did not find the operational learning curve to be too steep. However I have not tried to clean the unit other than brushing out the "bowl" and needling out the holes so I can't really comment on this aspect though it is extremely important to me. The 6 temp steps are pretty much what I'm used to but I will say that the draw resistance feels heavy to me. I know the water filtration adds draw resistance but I find this to be exacerbated by the short run time. I also realize I can turn it right back on but in my experience, heavy draw resistance is better suited to a "hot" vape that you'll want to put down after a couple of draws, while a light resistance goes well for pecking lightly for several minutes, which is more my style. I consider this a con albeit a minor one. I also find that this makes the lower temps a bit disappointing as ~ 370 - 395f is my favorite range. Now, I'm happy to admit that the NX has excellent extraction capability, yielding quite pronounced effects from my herbs, especially at the optimum temp. Also, while I like the smoked glass of my black model, I may try to get a clear replacement tube to better see when it fills with vapor. Overall I am happy with the NX and satisfied with the purchase. It's expensive but well thought out, designed and implemented. I like it very much and would buy it again. * Delivery was late but I opted for free so no complaints.