I've always been a PG Tips drinker, of course these days it's the pyramid bags. but that's likely as much through habbit as anything else, but folks always bought PG Tips so its the brand i buy too.
not sure if i've tried Yorkshire Gold though, i shall give is a go.
the missus had a funny turn and decided she wanted lots of fruit teas, so we spent a small fortune ordering a bunch of weird flavours from Twinings for her. i snuck a selection box of their more normal teas (Earl Grey, Prince of Wales, Breakfast, etc etc) and while they were nice, for a change, the most refreshing and revitalising cuppa in the morning or the end of the day was from a humble PG Tips.
Plus, when i were a lad, they had the adverts with the chimps. and now, they have adverts with Johnny Vegas and a monkey. you gotta give them points for consistency over the years :)