I have never had a bad flight with either, it is a personal thing rather like the difference between driving two equally good cars one just makes you feel better than the other, another person may have the opposite view.
Like me.
I have used BE when necessary without major problems, but I like the overall ASW product better. Simply because I prefer the inclusive pricing concept over the "add this and that" and "are you really sure that you don't want to...." nuisance. Plus I am always for the "buy locally" approach if prices are reasonable.