I like this RDA, it compares favourably with more expensive high-end ones.
The flavour is great, coil setup straightforward, deep enough juice well and it's nearly impossible to over squonk. It's well built, solid.
Only two small issues, the all-metal default configuration gets really hot really fast with larger coils (including the fused clapton it came with) and the airflow is noisy when fully open.
Using the plastic colour kit (not included) solves the hot tank problem and sightly closing the airflow solves the noise problem and still delivers an excellent restricted direct lung vape.
If you want to use the all metal configuration I'd recommend simple roundwire or parallel coils, otherwise buy the plastic parts kit.