When you think of smoke you have to think Fire Management and how EFFICIENT the wood is burning. In a bradley it's very inefficient, so you get lots of that 'white' smoke.
In the FE, it's very efficient, burns clean and little waste (it's just 100% compressed sawdust)
If you read every post here, I don't think in 4 or 5 years of the FE forum, that you'll find one about oversmoked. More likely you'll hit the number of them that talk about wanting more smoke (my personal opinion is that people get used to oversmoked meats in offsets).
Roughly, it burns a 1lb of pellets an hour (actually less in the IQ4)