BFS is a vile place. The lounges are awful, the food is rediculously overpriced and there's a load of package 'lets look like tramps and get wasted' holiday idiots drinking in the pubs too a lot of the time.
BHD is a much nicer enviroment. The seats in the lounge could do with being replaced as they're getting a bit grotty but aside from that I've no complaints. The water is a rip off in the shop but thats the same in any airport.
The advantage of BFS is that normally it's cheaper to fly with easyjet than flybe from the city but im getting to the point where i'd rather just fly from the city when I can regardless of price (within reason).