Thatchers! Wonderful stuff, pretty much any variety.
Stowford Press is lovely too. Magners only any good if VERY cold, strongbow and blackthorn are just chemically shite and stuff like Bulmers is far too sweet.
Thankfully Thatchers have done very well for themselves over the last several years and is pretty easy to get
Went to watch Somerset play at the Lord's final a few years ago (yes, another one they lost) and there was no Somerset cider for sale! The only plus point Bath have over Exeter Chiefs is the cider on offer (and sponsor).