I recently upgraded to the Moze Varity from a 7 year old very tall KM hookah. Although I still have my KM, and it will always have a place in my heart, the Varity has completely changed my smoking experience.
You can read post after post and watch reviews about the Varity. But until you actually get to smoke one, you can't understand how well this hookah is designed and built. Every piece is built to last and deep cleaning is an absolute breeze.
I tested two different water levels and the pull ranged from very light and easy to almost close to a neutral pull. So if you don't like to work for your smoke, this is the hookah for you.
The only problem is the availability of accessories in the US for this hookah. It seems like you can find very little variety from vendors here in the states. If money isn't an option, you can always buy direct from the Moze online store and pay international shipping. That is what I did for my Line + mouthpiece, and didn't regret it one bit.