I’m still working with the one I’ve got.
That other one, though - it looks like it may be a bit better with the stronger hit, but I’m not sure about the refillable cartridges.
Anyhoo - I’m still working with it. I use it, but supplement with regular ones. It’s a work in progress.
Glad to hear you haven’t given up on it entirely. You can use refillable carts, like I do, or you can also get pre-filled cartomizers, by the way.