I was disappointed when the IQ2 was replaced with the IQ3. The IQ3 is bigger, which I don't want. It's wasteful and all my dosage pods won't fit. So that's a no-go for me. Instead I've bought the IQC, which isn't as good as the IQ2 was, but at least my dosage pods fit. The IQC is has more plastic and rubber parts, and it burns out a bit faster than the IQ2 did. But it's also cheaper, so I guess it's a wash, really. PS I also bought that horrid Chewy grinder, which was a complete waste of money. It was slow, didn't have much room in it, it clogged up very easily, and it was a pain to clean. I wound up just discarding it. Overall I have liked Davinci products, but lately they've been disappointing me more. There's still no other vaporizer on the market that compares, though, so I'll remain a customer.