I've used this product for a few days and found its quality to be quite average. 1. The tank leaks oil, and the rubber plug on the fuel filler cap broke after a few uses. 2. The power button doesn't have a lock function, so it often gets activated in my pocket. Of course, given the price of $24.99, I didn't expect the quality to be very high.
My personal suggestion is that I hope the second generation of this device will add some features. if you were a fan of the first-generation RELX, you might consider buying the 1.0 replacement tank when purchasing a new one, as the 0.6 has a stronger taste.
I used the e-liquid in my other brand's device with a 0.9-ohm coil, and it felt very good.