I've read up on a bunch of them. I see the convenience, somewhat of just loading pellets. But I'm not sold. Most I'm aware of require power and a supply of pellets. So you're tied to the grid still, and at the mercy of businesses who need to turn a profit. Totally not my thing. They gained popularity here for awhile and then levelled off. I don't service/clean pellet stoves at all. To much of the 'technology' is manufacturer specific and a well known issue for sweeps is getting called to service a pellet stove and then being told afterwards that they must have messed something up as it's not working properly. When in actual fact it may not have worked properly before the cleaning call and now you're caught up in 'fixing' it. Lots of expensive little control boards, fans, and whatnot. Not my cup of tea at all.
My neighbours who are good friends of ours just bought one, beautiful appliance. I hope it works out well for them.