Sorry: I thought you were being facetious, but it turns out you were being interesting!:w00t:
Background: for black tea I used to drink PG Tips a lots and I could taste the difference between different batches. Brewing time anything from 5-10 minutes up to hours & a microwave reheat. I liked it when it was 'depth' combined with complexity. Occasionally one of those would be missing in a whole box. After I stopped drinking black tea, there was a few months gap before I started drinking redbush tea. I hate and always hated Earl Gray.
Redbush Tea: I use a variety. My favourite is
Tick-Tock without doubt, it can be quite intoxicating.
Redbush Tea Company can be lacking in the 'depth'/body, and Tetley lacks the complexity but has extra 'body'. Switching between these, and occasionally others, keeps all of them tasting fresh.
And you know it all depends what mug you brew it in as well! (I brew it teabag in 0.5L mug or thermos)
Oh, and I put a tiny bit of salt in ever since screwing up Ennerdale with cramp in 2010!