After far too long debating on whether to get a stove fan, I gave this one a try...... should have done it much sooner!!
This one seems well built, starts up quickly and spreads the air into the room very well. 
Basically it does exactly what it should and I’m considering buying a second one. 
If you’re thinking of trying a fan stove for the first time or simply replacing and existing one, this 4 blade one from vonhaus seems to be good value so far. The magnetic temperature gauge is a nice addition and makes the package more attractive in terms of value.