LOL
Are we brave enough to try LHR for a 3rd time?
Do we stick with GIG, a city we know that we love?
With your track record I'd stay away from LHR
.
Jokes aside, why would you pick a dreary city like London over Rio which you already know you love? Just because you've never been to LHR? Doesn't seem that exciting from what I've seen, unless you were going some other place in Europe also it doesn't seem worth it to me. My $.02.