I agree I think the Q400 is a fantastic a/c but I'm only going on working with the fleet from a handling agents point of view, I'm not mecanically minded so I'm not even gonna go there, I think the turboprop is a great airliner and as you said more economical, for instance BE fly LBA-BHD and burn on average 850kgs JET2 fly LBA-BFS and burns an average of 2000kgs now I know that its a 737 and the BE is a Q400 but still jet2 only carry the same amount of pax and I'm sure BFS isn't much different in distance, Iremember when BE were using the CRJ they were using the same amount of fuel as they do with the ne Q400 so it says something doesn't it.
CHEERS!!!!!!!!!!!!