Being happy with the Roffu I picked up the Avant on a whim with a 4/20 discount for fun.
Generally I'm very happy so far. I want something cheap and cheerful that fits in my pocket better than the Roffu, and this fits the bill. It's very small and neat. I thought being an old vape I'd have to put up with micro-USB, but no, it's USB C!
In general I've settled on vape usage that fits a conduction vape. I put in a partial load and obliterate it it in a full temp session to get the full spectrum from the weed. It also keeps the vaporizer much cleaner, and I never have to wonder whether a load still has more to give, or pull out and waste a sticky half-used load.
Negatives: like the Roffu, stinks initially - Kapton tape or whatever. The Roffu odor and this one is mostly gone after many full temperature cycles before use. I still wish it wasn't there, along with the knowledge that it's probably still off-gassing even though I can't smell it any more. Also the air path is obviously very short and the mouthpiece seems like it'll clog easily but should be an easy clean with alcohol. And of course the non-replaceable battery is unfortunate.
But for all that, it's a very likeable and effective little unit. If anyone takes one apart to change the battery let us know as I can see myself wanting to keep this little guy going down the road.