Yeah I'm an old dude and kind of slow to adopt new things, but this has really saved a lot of concentrates. It's a very efficient way to dab.Excellent write ups here. I'm not much of a dabber, as of yet. I do have lots of material saved up, for concentrates, once I get settled in my new place. Ive steered clear of even viewing the pens because I thought they all needed cartridges. Never thought Id say this but, with these great reviews, Im inclined to get with the times and buy me a vape pen. Thanks guys, great job!!!