These are all so marginal. 5% is never going to add up to much on a small scale.

right - $1000 in flights every other month, returning $50 isn't much? that's a mobile bill for the month

Right. And that isn't even in the top 10 list of expenses. There is little reason not to save that $50 though. Then again, I would say not having a red-eye is worth a few hundred dollars.

But I don't know much about all this yet.