The IQ2 is absolutely a wonderful unit. The hard to clean parts have been eliminated and the airflow is much improved over the old IQ design. I've used my IQ regularly for 4 years and it has been a quality built unit with great flavor. As soon as I held the IQ2 I could tell Davinci had upped the bar in terms of fit and finish. The brushed aluminum and iodized colors are bright and vibrant and give an excellent secure feeling in the hand when in use. The lids and mouthpieces fit tighter and don't fall out. The redesigned flavor chamber and larger oven holes in conjunction with the air dial provide excellent airflow that you can dial in to your preferred setting. The dosage monitoring is great for those like me that are using for medical reasons too. It's nice to be able to gauge how much active compounds your consuming. I've been able to gauge my pain relief with what amounts of CBD, and THC I'm getting to know just how much will help me feel relief without getting my head in the clouds or to the moon. When you don't want to use it you don't have to, just buckle in and get ready for take off. The app is great and keeping a journal of strains and rating them is nice. My only request would be having the ability to write about the effects and save it along with just the star rating and strain. It's a quality unit inside and out. I feel as with my IQ that it will last, and if the need should arise the excellent customer service will be there for the next decade of use.