Good link, but for non DC what is difference between Tiny and Standard fares, very little, same cost to change flight, same wt allowances but there is very little to justify price differences.

And as for Priority baggage, it does not work, certainly on the A321,priority bags never come out first on busy Dub-LHR route, and at Heathrow end it is always 20 mins at least after landing before bags come out.